Niš in the context of "Constantine the Great"

The Battle of Nish (early November 1443) was fought between the Crusaders led by John Hunyadi and Đurađ Branković and the Ottoman Empire led by Kasım Pasha. It saw the Crusaders capture the Ottoman stronghold of Nish (Niš) in Serbia, and defeat two armies of the Ottoman Empire. The Battle of Nish was part of Hunyadi's expedition known as the long campaign. Hunyadi, at the head of the vanguard, crossed the Balkans through the Gate of Trajan, captured Nish, defeated three Ottoman pashas, and after taking Sofia from the Ottomans, united with the royal army and defeated Sultan Murad II at Snaim (Kustinitza). The impatience of the king and the severity of the winter then compelled him (in February 1444) to return home.

The Nišava District (Serbian: Нишавски округ, romanized: Nišavski okrug, pronounced [nîʃaʋskiː ôkruːɡ]) is one of administrative districts of Serbia. It lies in the southeastern parts of Serbia. According to the 2022 census, it has a population of 343,950 inhabitants. The administrative center of the district is the city of Niš. After South Bačka District, it is the second largest District in Serbia.

The Niš Declaration (Serbian: Niška deklaracija, Serbian Cyrillic: Нишка декларација) was a document issued on 7 December 1914, in the midst of World War I, in which the government of the Kingdom of Serbia formally declared its wartime objectives. Published during the Battle of Kolubara as a defensive declaration seeking to attract support from the South Slavs living in Austria-Hungary, it contained a promise to work for the liberation of South Slavs from foreign rule and the establishment of a common South Slavic state after the war. As the Serbian government had withdrawn from Belgrade earlier in the conflict, the declaration was adopted in the temporary Serbian capital of Niš.

The Triple Entente did not accept the objectives set out in the Niš Declaration because they supported the preservation of Austria-Hungary. In subsequent years, Allied support for a separate peace with Austria-Hungary and trialist reform proposals such as the May Declaration of 1917 motivated the Serbian government to cooperate with the Yugoslav Committee. Negotiations between the Serbian government and the Yugoslav Committee led to the Corfu Declaration of 1917, in which the two sides agreed to the creation of a common South Slavic state once the war had ended.

The Socialist Party of Serbia (Serbian: Социјалистичка партија Србије, romanized: Socijalistička partija Srbije, abbr. SPS) is a social democratic and populist political party in Serbia. Ivica Dačić, the former prime minister of Serbia, has led SPS as its president since 2006.

SPS was founded in 1990 as a merger of the League of Communists of Serbia and Socialist Alliance of Working People of Yugoslavia with Slobodan Milošević as its first president. In the 1990 general elections, SPS became the ruling party of Serbia while Milošević was elected president of Serbia. During Milošević's rule, SPS relied on the Serbian Radical Party (SRS) from 1992 to 1993 while it later led several coalition governments with SRS, New Democracy, and Yugoslav Left. Mass protests against SPS were held in 1991, and after being accused of falsifying votes in major urban cities, such as Belgrade and Niš, 1996–1997 protests were also organised. The Democratic Opposition of Serbia coalition defeated SPS in the 2000 general elections but Milošević declined to accept the results. This resulted in Milošević's overthrow.

Southern Serbia (Serbian: Јужна Србија, romanized: Južna Srbija) or sometimes referred to as South Serbia, Southeastern Serbia, Southern Pomoravlje, South of Central Serbia, historically known as New Territories, is a historical and geographical region in Republic of Serbia which most often refers to the territories of Nišava, Toplica, Jablanica, Pčinja and Pirot Districts. This region occupies about 14,000 square kilometers and is home to about 877.000 people. More than a quarter of the population in the region lives in the city of Niš. People from Southern Serbia are commonly known as Southerners.

Southern Serbia is not an official subdivision of Serbia, nor are its borders precisely defined. The region is characterized by the South Morava river, which flows almost entirely through Southern Serbia and which has historically connected the peoples who lived in its basin. The region is defined by a common history and culture.