The bubonic plaque changed the social structure of Europe by this:
Before, the nobles and aristocrats were the 'body' that ran almost everything political. However, after the bubonic plague, this was shifted towards the common people. So the common people basically got more rights.
hope this helps :D
Iroquois Six Nations Land Cessions to Pennsylvania, 1736-1792. Between 1736 and 1792, the Iroquois League, formed of the Seneca, Oneida, Mohawk, Cayuga, Tuscarora, and Onondaga tribes, made several important land deals with American colonists, often without the consent of those tribes who occupied the land.
Answer: The industrial revolution was a major time of change. I hope this was helpful!
To help rebuild the economy of Great Britain when there weren't enough adults to have those jobs in big factory's.
The Russian Revolution resulted in the overthrow of the Tsar and the formation of a Communist government.
The Tsar was replaced by the Council of People’s Commissars. This resulted in the abolition of private ownership resulting in a Communist government.