In the 1600s and 1700s, Spanish settlers spread into New Mexico, Texas, and California, although these areas remained sparsely populated. Conflicts between the Spanish and Native Americans were an ongoing problem that limited settlement.

What discouraged colonists from settling in Spanish borderlands?
A. the threat of war with nomadic Native Americans

B. the threat of war with the Pueblo Indians

C. the threat of war with French traders

ANSWER: the threat of war with nomadic Native Americans