Which was the first battle of what would become the american revolution?

Describe the technology advancements that lead to explorers being able to sail great distances. [[ps: doesn't explain where. i am only speculating it's in europe.

The primary goal of the abolitionist movement was to a) immediately emancipate or free all enslaved people. b) allow the gradual release of enslaved people. c) end the importation of enslaved people from africa. d) make mandatory the education of all enslaved people.

How did the actions of tsar nicholas 2 and his wife lead to revolution in russia