Can someones explain/tell me what happened when native americans did a treaty, there first contact with europeans, and oral language and settlement?

Icivics worksheet : rules for running a country

Aryans believed that the most important thing in life was warfare. if this statement is true, which of the following facts best supports it?

The missouri compromise angered because congress had allowed slavery to expand into another state. 1.) thomas jefferson 2.) northerners 3.) white southerners 4.) henry clay