<span>After his death his son succeeded him and added to his empire by conquering more of Europe and china, eventually the mongolian empire died out.</span>
The first one because he gave many speeches about culture and people why they should be able to ha g out and participate with whoever they want
Positive--resulted in the lowering of the voting age to 18, contributed to the end of the Vietnam War, contributed to furthering the civil rights movements of the time.
Negative--they were violent and led to the deaths of many in riots and shootings, their means were not taken seriously by adults and conservatives of the time,
Assuming this is the same question you posted before, the better historical argument deals with the idea that World War II began in part from the failure of the Treaty of Versailles.
Very negatively, peope ultimately blamed him for all of their problems and poor people who had to build very small homes named their homes after him, calling them "Hoover Homes"