Republic of Formosa
The Republic of Formosa (), was a short-lived republic that existed on the island of Taiwan in 1895 between the formal cession of Taiwan by the Qing Dynasty of China to the Empire of Japan by the Treaty of Shimonoseki and it being taken over by Japanese troops. The Republic was proclaimed on 23 May 1895 and extinguished on 21 October, when the Republican capital Tainan was taken over by the Japanese. Though sometimes claimed as the first Asian republic to have been proclaimed, it was predated by the Lanfang Republic in Borneo, established in 1777, as well as by the Republic of Ezo in Japan, established in 1869.
First Philippine Republic
The First Philippine Republic was established after the Philippine Revolution against Spanish Empire (1896-1897) and the Spanish–American War between Spain and the United States (1898). Following the American victory at the Battle of Manila Bay, Aguinaldo returned to the Philippines, issued the Philippine Declaration of Independence on June 12, 1898, and established a revolutionary Philippine government. In December 1898, Spain sold the Philippines to the United States in the 1898 Treaty of Paris, making the United States formally the Philippines colonial power. The Malolos Constitution establishing the First Philippine Republic was proclaimed the following month. The Philippine–American War began in February 1899, which the Philippine Republic lost.