How might the history of korea have been different if united nations forces had not stepped into oppose the north korean invasion in 1950?

Why is it useful for historians to base certain studies on the analysis of historical periods

Explain how the roles of both working class and middle and upper class women changed during the industrial revolution. how did those changes lead to the women’s rights and suffrage movements?

Before world war 1 started, austria-hungry was wary of (spain or serbia) because of border disputes