Republic of California
Texas qualifies as such.
Fifteen years, from 1821 until 1836.
Texas declared itself Independent of Mexico.
1776
It became independent in 1922 and declared itself as a republic in 1948.
No. Texas declared itself independent from Mexico an later tried to gain its entry into the American Union. This became the source of such conflicts as the Texas Revolution (1835-1836) and the Mexican-American War (1846-1848).
April 23, 1982. It declared itself to be the "Conch Republic."
In 1935? None. Actually, it was 1835 and the state was Texas.
Paraguay. It simply declared itself independent on May 15, 1811 and that was it.
Modern Israel, which declared itself to be an independent nation in May of 1948, is known as the Jewish State.
The second continental congress declared independence.
Vermont