Final answer:
European colonists won support from southeast tribes through trade goods and technology, and military alliances.
Step-by-step explanation:
European colonists used various strategies to win support from southeast tribes. One of the strategies was trade. They traded goods and technology with the tribes to establish economic relationships and gain their support. Another strategy was forming military alliances. Europeans formed alliances with some of the tribes, offering military support in exchange for the tribes' loyalty and assistance.