Amur Oblast

Manchuria is a historical region in northeast Asia encompassing the entirety of present-day northeast China and parts of the modern-day Russian Far East south of the Uda River and the Tukuringra-Dzhagdy Ranges. The exact geographical extent varies depending on the definition: in the narrow sense, the area constituted by three Chinese provinces of Heilongjiang, Jilin, and Liaoning as well as the eastern Inner Mongolian prefectures of Hulunbuir, Hinggan, Tongliao, and Chifeng; in a broader sense, historical Manchuria includes those regions plus the Amur river basin, parts of which were ceded to the Russian Empire by the Manchu-led Qing dynasty during the Amur Annexation of 1858–1860. The parts of Manchuria ceded to Russia are collectively known as Outer Manchuria or Russian Manchuria, which include present-day Amur Oblast, Primorsky Krai, the Jewish Autonomous Oblast, the southern part of Khabarovsk Krai, and the eastern edge of Zabaykalsky Krai.

The name Manchuria is an exonym (derived from the endonym "Manchu") of Japanese origin. The history of "Manchuria" (Manzhou) as a toponym in China is disputed, with some scholars believing it was never used while others believe it was by the late 19th century. The area was historically referred to by various names in the Qing dynasty such as Guandong (East of the Pass) or the Three Provinces referring to Fengtian (Liaoning), Heilongjiang, and Jilin. Manchuria as a geographical term was first used in the 18th or 19th centuries by the Japanese before spreading to Europe. The term was promoted by the Empire of Japan in support for the existence of its puppet state, Manchukuo. Although the toponym is still used, some scholars treat the term with caution or avoid it altogether due to its association with Japanese colonialism. The term is deprecated in China due to its association with Japanese imperialism and ethnic connotations. As a result, areas once considered part of Manchuria are simply referred to as the Northeast. The Three Provinces and the Northeast were also in concurrent use among the Japanese along with Manchuria until the Mukden incident of 1931.

Khabarovsk Krai (Russian: Хабаровский край, romanized: Khabarovskiy kray, IPA: [xɐˈbarəfskʲɪj kraj]) is a federal subject (a krai) of Russia. It is located in the Russian Far East and is administratively part of the Far Eastern Federal District. The administrative centre of the krai is the city of Khabarovsk, which is home to roughly half of the krai's population and the largest city in the Russian Far East (just ahead of Vladivostok). Khabarovsk Krai is the third-largest federal subject by area, and had a population of 1,343,869 as of 2010.

Being dominated by the Siberian High winter cold, the continental climates of the krai see extreme freezing for an area adjacent to the sea near the mid-latitudes, but also warm summers in the interior. The southern region lies mostly in the basin of the lower Amur River, with the mouth of the river located at Nikolaevsk-on-Amur draining into the Strait of Tartary, which separates Khabarovsk Krai from the island of Sakhalin. The north occupies a vast mountainous area along the coastline of the Sea of Okhotsk, a marginal sea of the Pacific Ocean. Khabarovsk Krai is bordered by Magadan Oblast to the north; Amur Oblast, Jewish Autonomous Oblast, and the Sakha Republic to the west; Primorsky Krai to the south; and Sakhalin Oblast to the east.

Heilongjiang is a province in northeast China. It is the northernmost and easternmost province of the country and contains China's northernmost point (in Mohe City along the Amur) and easternmost point (at the confluence of the Amur and Ussuri rivers).

The province is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a border with Russia (Amur Oblast, Jewish Autonomous Oblast, Khabarovsk Krai, Primorsky Krai and Zabaykalsky Krai) to the north and east. The capital and the largest city of the province is Harbin. Among Chinese provincial-level administrative divisions, Heilongjiang is the sixth-largest by total area, the 20th-most populous, and the second-poorest by GDP per capita after only Gansu province.

Yakutsk Time (YAKT) is a time zone in Russia which is nine hours ahead of GMT, and six hours ahead of Moscow Time (MSK). The time zone is also known as Asia/Yakutsk in the tz datbase.

The time zone covers Sakha Republic (western part), Amur Oblast and Zabaykalsky Krai.

Between 1858 and 1860, the Russian Empire annexed territories adjoining the Amur River belonging to the Chinese Qing dynasty through the imposition of unequal treaties. The 1858 Treaty of Aigun, signed by the general Nikolay Muravyov representing the Russian Empire and the official Yishan representing Qing China, ceded Priamurye—a territory stretching from the Amur River north to the Stanovoy Mountains, but the Qing government initially refused to recognize the treaty's validity. Two years later, the Second Opium War concluded with the Convention of Peking, which affirmed the previous treaty as well as an additional cession including the entire Pacific coast to the Korean border, as well as the island of Sakhalin to Russia. These two territories roughly correspond to modern-day Amur Oblast and Primorsky Krai, respectively. Collectively, they are often referred to as Outer Manchuria, part of the greater region of Manchuria.

The Jewish Autonomous Oblast (JAO) is a federal subject of Russia in the far east of the country, bordering Khabarovsk Krai and Amur Oblast in Russia and Heilongjiang province in China. Its administrative center is the town of Birobidzhan.

The JAO was designated by a Soviet official decree in 1928, and officially established in 1934. At its height, in the late 1940s, the Jewish population in the region peaked around 46,000–50,000, approximately 25% of its population. Since then, the share of Jews steadily declined, and according to the 2021 Russian census, there were only 837 ethnic Jews left in the JAO (0.6%).

The Heishui Mohe (Chinese: 黑水靺鞨; pinyin: Hēishuǐ Mòhé; Manchu: Sahaliyan i Aiman or 薩哈廉部; Korean: 흑수말갈; RR: Heuksu malgal), rendered in English as Blackriver Mohe or Blackwater Mohe, were a tribe of Mohe people in Outer Manchuria along the Amur River (Chinese: 黑水; pinyin: Hēi Shuǐ; lit. 'Blackwater" or "Black River') in what is now Russia's Khabarovsk Krai, Amur Oblast, Jewish Autonomous Oblast, and Heilongjiang in China.

The Stanovoy Range (Russian: Станово́й хребе́т, Stanovoy khrebet; Yakut: Сир кура) is a mountain range located in the Sakha Republic and Amur Oblast, Far Eastern Federal District. It is also known as Sükebayatur and Sükhbaatar in Mongolian, or the Stanovoy Mountains or Outer Khingan Range in English. The range was first studied and scientifically described by Russian researcher Alexander von Middendorff.

The Dzhagdy Range (Russian: Хребет Джагды) is a range of mountains in far Northeastern Russia. Administratively it belongs partly to Amur Oblast and partly to the Khabarovsk Krai of the Russian Federation.

The Zeya (Russian: Зе́я; from indigenous Evenki word "djee" (blade); Chinese: 结雅; Manchu: ᠵᡳᠩᡴᡳᡵᡳ
ᠪᡳᡵᠠ, Mölendroff: jingkiri bira) is a northern, left tributary of the Amur in Amur Oblast, Russia. It is 1,242 km (772 mi) long, and has a drainage basin of 233,000 km (90,000 sq mi). The average flow of the river is 1,810 m/s (64,000 cu ft/s).

Blagoveshchensk (Russian: Благовещенск, IPA: [bləɡɐˈvʲeɕːɪnsk], lit. 'City of the Annunciation') is a city and the administrative center of Amur Oblast, Russia. It is located at the confluence of the Amur and the Zeya Rivers, opposite the Chinese city of Heihe.

The Amur has formed Russia's border with China since the 1858 Aigun Treaty and the 1860 Treaty of Peking. The area north of the Amur belonged to the Manchu Qing dynasty by the Treaty of Nerchinsk of 1689 until it was ceded to Russia by the Aigun Treaty in 1858.

The Far Eastern Republic (Russian: Дальневосточная Республика, romanized: Dal'nevostochnaya Respublika, IPA: [dəlʲnʲɪvɐˈstotɕnəjə rʲɪsˈpublʲɪkə]; ДВР, DVR), sometimes called the Chita Republic (Читинская Республика, Chitinskaya Respublika, [tɕɪˈtʲɪnskəjə rʲɪsˈpublʲɪkə]), was a nominally independent state that existed from April 1920 to November 1922 in the easternmost part of the Russian Far East and Transbaikal. Although nominally independent, it largely came under the control of the Russian Soviet Federative Socialist Republic (RSFSR), which envisaged it as a buffer state between the RSFSR and the territories occupied by Japan during the Russian Civil War of 1917–1922. The Far Eastern Republic came to an end in November 1922 when it voluntarily merged with the RSFSR, which became one of founding members of the Soviet Union the following month. Its first president was Alexander Krasnoshchyokov.

The Far Eastern Republic occupied the territory of modern Zabaykalsky Krai, Amur Oblast, the Jewish Autonomous Oblast, Khabarovsk Krai, and Primorsky Krai of Russia (the former Transbaikal and Amur oblasts and Primorsky krai). Its capital was established at Verkhneudinsk (now Ulan-Ude), but in October 1920 it moved to Chita.

Lesser Khingan (Chinese: 小兴安岭; pinyin: Xiǎo Xīng'ān Lǐng; Russian: Малый Хинган, Maly Khingan) is a mountain range in China's Heilongjiang province and the adjacent parts of Russia's Amur Oblast and Jewish Autonomous Oblast.

In Russia, the range is part of the Khingan Nature Reserve.

Chita Oblast (Russian: Чити́нская о́бласть, romanized: Čitínskaja óblastj, IPA: [tɕɪˈtʲinskəjə ˈobləsʲtʲ]) was a federal subject of Russia (an oblast) in southeast Siberia, Russia. Its administrative center was the city of Chita. It had extensive international borders with China (998 km) and Mongolia (868 km) and internal borders with Irkutsk and Amur Oblasts, as well as with the republics of Buryatia and Yakutia. Its area was 431,500 square kilometers (166,600 sq mi). Population: 1,155,346 (2002 census); 1,377,975 (1989 Soviet census).

The oblast was established on September 26, 1937. On March 1, 2008, Chita Oblast merged with Agin-Buryat Autonomous Okrug to form Zabaykalsky Krai.

Prunus maackii, commonly called the Manchurian cherry or Amur chokecherry, is a species of cherry native to Korea and both banks of the Amur River, in Manchuria in northeastern China, and Amur Oblast and Primorye in southeastern Russia. It used to be considered a species of Prunus subg. Padus, but both morphological and molecular studies indicate it belongs to Prunus subg. Cerasus.

It is a deciduous tree growing to 4–10 m tall. The bark on young trees is very distinct, smooth, glossy bronze-yellow, but becoming fissured and dull dark grey-brown with age. The leaves are alternate, ovate, 4–8 cm long and 2.8–5 cm broad, with a pubescent 1–1.5 cm petiole, and an entire or very finely serrated margin; they are dark green above, slightly paler and pubescent on the veins below. The flowers produced on erect spikes 5–7 cm long, each flower 8–10 mm diameter, with five white petals. The fruit is a small cherry-like drupe 5–7 mm diameter, green at first, turning first red then dark purple or black at maturity. Flowering is in mid spring, with the fruit ripe in early summer to early autumn.

Manchuria is a historical region in Northeast Asia encompassing the entirety of present-day Northeast China and parts of the modern-day Russian Far East south of the Uda River and the Tukuringra-Dzhagdy ranges. The exact geographical extent varies depending on the definition: in the narrow sense, the area constituted by three Chinese provinces of Heilongjiang, Jilin, and Liaoning as well as the eastern Inner Mongolian prefectures of Hulunbuir, Hinggan, Tongliao, and Chifeng; in a broader sense, historical Manchuria includes those regions plus the Amur river basin, parts of which were ceded to the Russian Empire by the Manchu-led Qing dynasty during the Amur Annexation of 1858–1860. The parts of Manchuria ceded to Russia are collectively known as Outer Manchuria or Russian Manchuria, which include present-day Amur Oblast, Primorsky Krai, the Jewish Autonomous Oblast, the southern part of Khabarovsk Krai, and the eastern edge of Zabaykalsky Krai.

The name Manchuria is an exonym (derived from the endonym "Manchu") of Japanese origin. The history of "Manchuria" (Manzhou) as a toponym in China is disputed, with some scholars believing it was never used while others believe it was by the late 19th century. The area was historically referred to by various names in the Qing dynasty such as Guandong (East of the Pass) or the Three Provinces referring to Fengtian (Liaoning), Heilongjiang, and Jilin. Manchuria as a geographical term was first used in the 18th or 19th centuries by the Japanese before spreading to Europe. The term was promoted by the Empire of Japan in support for the existence of its puppet state, Manchukuo. Although the toponym is still used, some scholars treat the term with caution or avoid it altogether due to its association with Japanese colonialism. The term is deprecated in China due to its association with Japanese imperialism and ethnic connotations. As a result, areas once considered part of Manchuria are simply referred to as the Northeast. The Three Provinces and the Northeast were also in concurrent use among the Japanese along with Manchuria until the Mukden incident of 1931.