Answer:
A. It established a government to be in place after Texas achieved independence from Mexico.
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This is the correct answer. The Texas Constitution, adopted in 1836, established a government for the Republic of Texas after it achieved independence from Mexico. It outlined the structure and powers of the government, defined the rights and liberties of the citizens, and served as the fundamental law of the newly independent state.
Explanation of why the others are incorrect:
B. It created a government to replace the Spanish colonial government after Mexico's independence.
This is incorrect. The Texas Constitution did not replace the Spanish colonial government, as Texas was not a Spanish colony. Texas was part of Mexico before gaining independence in 1836.
C. It allowed Texas to join the United States as a full-fledged state after its independence.
This is incorrect. The Texas Constitution was adopted when Texas was an independent republic, not when it joined the United States as a state. Texas joined the United States as a state in 1845, and a new state constitution was adopted at that time.
D. It explains the reasons for the Texas independence movement.
This is incorrect. The Texas Constitution does not primarily explain the reasons for the Texas independence movement. It primarily establishes the government structure for the Republic of Texas after achieving independence from Mexico.