Why did european countries need wealth to start exploring the world?

Because if they don't have wealth they won't be able to buy their supplies and hire crewmen. They wouldn't be able to get ships and boats.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

c

explanation:

i am pretty sure hopefully just you