How long did the Republic of Texas exist for?

The Republic of Texas (Spanish: República de Tejas) was a sovereign state in North America that existed from March 2, 1836, to February 19, 1846, although Mexico considered it a rebellious province during its entire existence.

Explanation:

It became its own country, called the Republic of Texas, from 1836 until it agreed to join the United States in 1845. Sixteen years later, it seceded along with 10 other states to form the Confederacy.

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