Why is the iran contra affair significance?

How were castas paintings used to stabilize a society?

Plz the 10 places that charles darwin stopped at to report his findings, and include dates?

Why was the united states motivated to establish the open door policy? a. the policy guaranteed american commerce with china. b. the policy supported the chinese nationalist cause. c. the policy led to a gain of american colonies in asia. d. the policy claimed damages from the chinese.