How did technology change how cities grew and how businesses change between 1850 and 1900?

Which of the following wars was the most devastating to oklahoma? a. american revolution b. mexican-american war c. civil war d. world war i

Which statement best summarizes the colonial system belgium created in the congo free state? o a. belgians relied on threats and brutal violence to force natives to work on rubber plantations, o b. belgians encouraged mass immigration from europe to force natives from their lands. o c. belgians improve local economies but stripped natives of their political rights. d. belgians offered natives political equality only if they gave up their traditional beliefs

Why would employers want there to be large numbers of unemployed workers around?