What caused russia to exit world war i in 1917?
a. the death of the czar
b. a revolution within russia
c. a surprise invasion by poland
d. the bankruptcy of the russian treasury

Which colony did the first mass influx of slaves populate?

Will have the greatest effect on human health. pollution in the a. troposphere b. stratosphere mesosphere d. thermosphere

Who were the sons of liberty? a. colonists who wanted a monopoly on the british tea trade. b. colonial anti-british protestors c. colonists who wanted seats in the british parliament. d. colonists who wanted to block all colonial trade with britain. !