Help pls I don’t know this

Which best describes the impact of the crusades on european exploration?

What was the major outcome of shays' rebellion? a) daniel shays and his followers were all hanged. b) farmers were given more rights by the states. c) george washington publicly supported the rebellion. d)it convinced many people that the articles of confederation was in need of revision.

Describe two observations that galileo was the first to make with his telescope.