List and describe three ways trade changed the world between 600 and 1500 AD.

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martin luther believed that selling indulgences was wrong and gave people a license to sin. the roman catholic church used the practice of indulgences to raise money for major building projects.

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

capitalism is an economic system that works around the concept of wealth creation in the pursuit of economic growth for the nation while mercantilism focuses on wealth accumulation through extraction of wealth which they believe is measured by the amwount of gold bollions that the nation has in its possession.