Which colonial power was the largest in Latin America in 1800?

What was the main argument of plessy in plessy v. ferguson

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.

When did martin luther king, jr. deliver his famous "i have a dream" speech? a. during the montgomery bus boycott b. during the birmingham campaign c. during his acceptance of the nobel prize d. during the march on washington