Why did many european nations quickly join world war i following the assassination of archduke ferdinand in 1914?

They had pledged to fight with other countries.

Explanation:

After the death of archduke Ferdinand in 1914 bunches of nations immediately joined World War I since they had officially swore to battle with nations according to their own allegiances. The territory for war was basically set, and unions were at that point made, the interests were known and on the table for couple of years before that, so the death of archduke Ferdinand was only the point that denoted the beginning stage of the practically unavoidable war.

c]extended voting rights to african americans

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: