What was the most important feature that shaped the era of new imperialism but not the era of old imperialism

The Industrial Revolution was one important feature of new imperialism, which not only freed the colonies and began the formation of an independent state, but also declared bourgeois liberties while retaining the slavery of blacks.

nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

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explanation:

max weber's 3 types of authority. the sociologist and philosopher  max weber  distinguishes  three types of authority—charismatic,  traditional  and legal-rational—each of which corresponds to a brand of  leadership that is operative in contemporary society.