Republic of Formosa
The Republic of Formosa survived for only five months. The Japanese landed near Keelung on the northern coast of Taiwan on 29 May 1895, and in a five-month campaign swept southwards to Tainan. During the night of 4 June, on the news that the Japanese had captured Keelung, President T'ang and General Chiu fled to Tamsui, and from there sailed for the mainland on the evening of 6 June. The Japanese entered Taipei shortly afterwards.
James Long (filibuster)
By June 1819, the so-called Long Expedition had arrived in Texas and successfully captured Nacogdoches. His followers proclaimed Long the first president of the new "Republic of Texas" (unrelated to the later Republic of Texas that was the result of the Texas Revolution), also called the "Long Republic". Despite this initial success, Long's independent republic lasted just four months. His army eventually grew restless and many men returned to the United States, and a Spanish expedition routed Long and his remaining followers in October 1819. Long escaped to Natchitoches, Louisiana.