Answer:
c) nine years after it became an independent republic
Step-by-step explanation:
Texas declared independence from Mexico in March 1836, however, both major political parties in the us heavily opposed this idea; in 1843, president john Tyler began to pursue the idea of Texas statehood, and in March 1845; Tyler signed the annexation bill and on December 29, new president james k Polk signed the bill and Texas became the 28th American state