Whose explorations led to a greater knowledge of North America, the Arctic, Australia, and the Hawaiian islands?

Robert de La Salle’s and Henry Hudson’s
Henry Hudson’s and James Cook’s
Samuel de Champlain’s and Robert de La Salle’s
James Cook’s and Samuel de Champlain’s

definitely a for sure. ill see and update if i get the answer

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: