Government of the Republic of China in the context of "Free Area of the Republic of China"

The Taipei–Keelung metropolitan area (Chinese: 臺北基隆都會區; pinyin: Táiběi-Jīlóng Dūhùiqū) also commonly known as Greater Taipei Area (Chinese: 大臺北地區; pinyin: Dà Táiběi Dìqū) is the largest metropolitan area in Taiwan. It is composed of 3 administrative divisions: Taipei, New Taipei City and Keelung. The region encompasses an area of 2,457.13 square kilometers (948.70 sq mi) and a population of 7,034,084 as of 2019. It is the most populous and the most densely populated metropolitan area in Taiwan, with one-third of Taiwanese people living and working there. In some sources, Taoyuan City is included in the metropolitan area on a broader extent, but is usually considered as a metropolitan area of its own.

The region is the epicenter of Taiwanese culture, economy, education and government. Designated as a global city, the region exerts a significant impact on commerce, finance, media, art, fashion, research, technology, education, and entertainment, both locally and internationally. As a diplomatic center, it is the home to all consulates and embassies in Taiwan. Its economic power makes the region the country's premier commercial and financial center as well as in the region of East Asia. Considered to be a global city and rated as an Alpha - City by GaWC, Taipei is part of a major high-tech industrial area. Railways, highways, airports, and bus lines connect Taipei with all parts of the island. The metropolitan area is served by two airports – Songshan and Taoyuan.

Taipei (/ˌtaɪˈpeɪ/ ; traditional Chinese: 臺北; simplified Chinese: 台北; pinyin: Táiběi pronounced:[tʰǎɪpèɪ]), officially Taipei City, is the capital and a special municipality of Taiwan. Located in Northern Taiwan, Taipei City is an enclave of the municipality of New Taipei City that sits about 25 km (16 mi) southwest of the northern port city of Keelung. Most of the city rests on the Taipei Basin, an ancient lakebed. The basin is bounded by the relatively narrow valleys of the Keelung and Xindian rivers, which join to form the Tamsui River along the city's western border.

The municipality of Taipei is home to an estimated population of 2,494,813 (March 2023), forming the core part of the Taipei–Keelung metropolitan area, also known as "Greater Taipei", which includes the nearby cities of New Taipei and Keelung with a population of 7,047,559, the 40th most-populous urban area in the world—roughly one-third of Taiwanese citizens live in the metro areas. The name "Taipei" can refer either to the whole metropolitan area or just the municipality alone. Taipei has been the political center of the island since 1887, when it first became the seat of Taiwan Province by the Qing dynasty until 1895 and again from 1945 to 1956 by the Republic of China (ROC) government, with an interregnum from 1895 to 1945 as the seat of the Government-General of Taiwan during the Japanese rule. The city has been the national seat of the ROC central government since 1949, and it became the nation's first special municipality (then known as Yuan-controlled municipality) on 1 July 1967, upgrading from provincial city status.

The Nationalist government, Nationalist regime and Nationalist China, officially the National Government of the Republic of China, refer to the government of the Republic of China from 1 July 1925 to 20 May 1948, led by the nationalist Kuomintang (KMT) under Chiang Kai-shek.

Following the outbreak of the Xinhai Revolution, revolutionary leader Sun Yat-sen was elected to be China's provisional president and founded the Provisional Government of the Republic of China. To preserve national unity, Sun ceded the presidency to military strongman Yuan Shikai, who established the Beiyang government. After a failed attempt to install himself as Emperor of China, Yuan died in 1916, leaving a power vacuum which resulted in China being divided into several warlord fiefs and rival governments. They were nominally reunified in 1928 under the Nanjing-based government led by Chiang Kai-shek, which after the Northern Expedition initially governed the country as a one-party state under the Kuomintang, and was subsequently given international recognition as the legitimate representative of China, with Chiang as a de facto leader of the country under a military dictatorship. The Nationalist government would then experience many further challenges such as the Second Sino-Japanese War, and the Chinese Civil War. The government was in place until it was replaced by the current Government of the Republic of China in the newly promulgated Constitution of the Republic of China of 1947.

The Additional Articles of the Constitution of the Republic of China are the revisions and amendments to the original constitution of the Republic of China to "meet the requisites of the nation prior to national unification", taking into account the democratic reforms and current political status of Taiwan. The Additional Articles are usually attached after the original constitution as a separate document. It also has its own preamble and article ordering different from the original constitution.

The Additional Articles has been part of the fundamental law of the present government of the Republic of China on Taiwan since 1991, and were last amended in 2005. The Additional Articles will sunset in the event the Republic of China regains control of the Mainland Area.

The Constitution of the Republic of China is the fifth and current constitution of the Republic of China (ROC), ratified by the Kuomintang during the Constituent National Assembly session on 25 December 1946, in Nanking, and adopted on 25 December 1947. The constitution, along with its Additional Articles, remains effective in ROC-controlled territories.

Intended for the entire territory of the Republic of China as it was then constituted, it was never extensively nor effectively implemented due to the outbreak of the Chinese Civil War in mainland China at the time of the constitution's promulgation. The newly elected National Assembly soon ratified the Temporary Provisions against the Communist Rebellion on May 10, 1948. The Temporary Provisions symbolises the country's entering into the state of emergency and granted the Kuomintang-led government of the Republic of China extra-constitutional powers.

The Temporary Provisions Effective During the Period of National Mobilization for Suppression of the Communist Rebellion provisions of the Constitution of the Republic of China were effective from 1948 to 1991 and amended four times by the Central Government of China. They effectively nullified the constitution and established martial law in Taiwan, where civil and political freedoms were curtailed. The official rationale for the provisions was the ongoing Chinese Civil War. However, with the demise of the Kuomintang single-party system, the provisions were repealed.

Metropolitan areas were recognized by the government of the Republic of China (Taiwan) until 2010 and were separated into 5 metropolitan areas and 2 satellite cities. They were: Taipei, Taoyuan, Hsinchu, Taichung, Chiayi, Tainan, and Kaoshiung. All special municipalities are within these metropolitan areas.

The definition of metropolitan areas used by the ROC central government were:

Martial law in Taiwan (Chinese: 戒嚴時期; pinyin: Jièyán Shíqí; Pe̍h-ōe-jī: Kài-giâm sî-kî) refers to the periods in the history of Taiwan after World War II, during control by the Republic of China Armed Forces of the Kuomintang-led regime. The term is specifically used to refer to the over 38-year-long consecutive martial law period between 20 May 1949 and 14 July 1987, which was qualified as "the longest imposition of martial law by a regime anywhere in the world" at that time (having since been surpassed by Brunei).

With the outbreak of Chinese Civil War, the "Declaration of Martial Law in Taiwan Province" (臺灣省戒嚴令; Táiwān Shěng Jièyán Lìng; Tâi-oân-séng Kài-giâm Lēng) was enacted by Chen Cheng, who served as the chairman of Taiwan Provincial Government and commander of Taiwan Garrison Command, on 19 May 1949. This order was effective within the territory of Taiwan Province (including Island of Taiwan and Penghu). The provincial martial law order was then superseded by an amendment of the "Declaration of Nationwide Martial Law", which was enacted by the central government after the amendment received a retroactive consent by the Legislative Yuan on 14 March 1950. Martial law in Taiwan Area (including Island of Taiwan, Penghu) was lifted by a Presidential order promulgated by President Chiang Ching-kuo on 15 July 1987.