Belief in the concept of Manifest Destiny · Desire of southern farmers to expand cotton farming
· Extensive Immigration west of the Mississippi River
· Disagreements with Mexico about the Rio Grande border
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Annexation of Texas

Explanation:

Settlers began to move to the West with the idea of territorial expansion. With manifest Destiny, American culture expands to acquired territories. People began to move to the west of the Mississippi River in search of land and to began their new life. The majority of Anglo settlers in Texas were involved in farming and ranching. The Treaty of Guadalupe Hidalgo ended the war between the United States and Mexico. Mexico gave all its territories and recognised the Rio Grande as the southern boundary of America.

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

think its caste system

explanation: