The main reason is that it stemmed from the annexation of the Republic of Texas by the U.S. in 1845 and from a dispute over whether Texas ended at the Nueces River (the Mexican claim) or the Rio Grande (the U.S. claim).
Answer:
true
Explanation:
becouse president linkion belief that the union could not be divideed
Higher population (more workers) and better relations/trade with England"
The deep south , because they are considered the “core” of the south.
