Answer:
Avoiding competition in the cotton market, is the right answer.
Step-by-step explanation:
The Texas annexation that took place in the year 1845 was an annexation of Texas into the U.S. For various reasons, Southerners advocated the annexation of Texas. It remained a slave state since slavery existed in Texas. This would provide the South with another slave state. However, their main goal was to avoid competition in the cotton market.