What is the relationship between stars in a cluster?

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.

Which of the following events happen during president hardings term? a) the supreme court decided to break up large corporations. b) the supreme court strength and state laws protection labor union. c) the supreme court ruled in favor of extended regulations of child labor. d)the supreme court made it easier for large businesses to operate.

Brainles asap!me : -how has religious fundamentalism been used by extremists in the middle east?