Which of the following did Isaac Stevens do before he started discussing the treaties with Native Americans?
O He learned the Chinook Jargon language so he could translate treaty requirements.
He met with local Native American chiefs to decide who would accept the treaties.
He called a gathering of Native Americans and selected representatives of the tribes.
He taught Native Americans enough English that they could understand the treaties.

How did european exploration and expansion cause the african slave trade to expand? a. european explorers discovered the slave trade and expanded it across the indian ocean into south asia. b. arab armies captured european explorers and forced them into slavery. c. european traders shipped enslaved africans to work on plantations in european colonies in the americas. d.european explorers captured african people and forced them to work on their ships.