Disadvantages, I believe, but am not sure are factual, were with a strong executive branch, the people feared that the president would manipulate his powers, just like the king of England had done so with the colonies and those who disagreed with it thought that the smaller sates wouldn't be voiced.
Positive:
The founding of North America
Acquiring of wealth and natural resources
Negative:
The colonialism of Spain and Britain (From native's pov)
Slavery of natives
Led to the Atlantic Slave Trade
Arguably led to the Scramble for Africa
About 15 percent of Americans live in poverty
Females would generally become gatherers and take care of the home and children in hunter-gatherer societies.
D the Spanish destroyed the culture and took the gold from the Native Americans the natives were used as slaves and abused