What was nicholas copernicus known for?
a. introducing the theory of gravity
b. improving the telescope, thermometer, and compass
c. using mathematics to prove the earth revolves around the sun
d. developing a new branch of mathematics called calculus

How did the boston massacre contribute to the writing of the declaration of independence? a. many colonists began to see the british government as a source of protection. b. many colonists began to see the british government as a supporter of free speech. c. many colonists began to oppose the british government's building of forts on the frontier. d. many colonists began to fear the british government's harsh actions toward the colonies.