What two events bring about the renaissance

One could be the rise of towns and the crusades.  The Crusades was a campaign to reclaim the Holy from Muslim rule.  Despite the number of campaigns launched.  The Holy remained under Muslim control and this weakened the feudal system as the nobility spent most of their wealth on these campaigns.  This led to the growth of towns where merchants grew rich and became a force in society which led to the rise of the Renaissance where interest was centered on the classics.

They had to go back and forth to the atlantic ocean and the pacific ocean to build the panama canal thats the best i can answer