Why hasn't europeans used maritime routes before the age of exploration?

Which describes the persian empire? choose all that are (a) the persian army defeated the athenians at the battle of marathon. (b) the persians avoided using ideas from the peoples they conquered. (c) cyrus allowed conquered peoples to keep their cultures. (d) darius i built a network of good roads for communication. choose all that are

Unlike european immigrants, chinese immigrants in the 1800s faced

According to greenville why does great britain have a large debt and who should pay that debt? ?