What contributions did Columbus and Diaz make in the course of opening up routes in America and East India?

Columbus "discovered" the new continent of America, thus establishing a connection between the old and new continents. As a colonizer, he brutally plundered and slaughtered the American people. However, it was colonization, plunder and robbery that greatly promoted the transformation of Europe from feudalism to capitalism, objectively brought new modes of production to the United States, and shortened the process of America's entry into modern society. Diaz opened up a new world for the emerging bourgeoisie. The increase of markets, trade with colonies, means of exchange and general commodities in East India and China led to unprecedented prosperity of commerce, navigation and industry, which led to the rapid development of revolutionary factors within the collapsing feudal society.