Low food/water, bad weather, and sorry I don't know the last one
Technology, mathematics, Renaissance
Answer:
The 1920s was a decade of profound social changes. The most obvious signs of change were the rise of a consumer-oriented economy and of mass entertainment, which helped to bring about a "revolution in morals and manners." Sexual mores, gender roles, hair styles, and dress all changed profoundly during the 1920s.
Explanation:
I don't know the exact answer but that's what I put
The answer is a because British were trying to take all the land away from native Americans which caused tension<span />