It was difficult for Congress to fulfill its duties under the Articles of Confederation because Congress lacked the power to regulate foreign trade, and most congressional decisions required the approval of at least nine states.
It benefited in numerous ways but mainly it and maybe most importantly it gave them the access to the China trade. The Pacific route was also Spain's exclusively for a certain period of time and there was also a great need for silver in China which was supplied by the Spaniards from their silver mines.
Because the earth's climate is CONSTANTLY in flux and what today is a desert was once a tropical forest.
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