Texas was once a territory of what country?

Mexico i think

Explanation:

Although Mexico's war of independence pushed out Spain in 1821, Texas did not remain a Mexican possession for long. It became its own country, called the Republic of Texas, from 1836 until it agreed to join the United States in 1845.

the answer is c. many americans held nativist or racist views

europe would not recognize the confederacy as an independent nation.