Laws the federal government should make for all states?

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

Pl did european countries want to find a shorter route to the far east? a. costs would be lower. b. they could take more trips. c. the route they used was rough and dangerous. d. sailors did not want to be away from home so long.

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.