The correct answer is B. White Southerners wanted the Native Americans' valuable land.
Step-by-step explanation:
In 1830 President Andrew Jackson signed the Indian Removal Act, in this, he allowed the removal of Indian tribes through "negotiations". This act implied different Indian tribes such as the Cherokee or the Seminole moved from their ancestral territories in the Southeast in exchange for territory in the West. The main motivation for this was the interests of white southerners in the territory where Indian tribes lived as this territory allowed white people to expand their settlements and could be used for economical purposes. Thus, the United States government removed Native Americans in the 1830s because "white Southerners wanted the Native Americans' valuable land".