Answer:
Freedman" Bureau was very succesful because Freedmen’s Bureau fed millions of people, built hospitals and provided medical aid, negotiated labor contracts for ex-slaves and settled labor disputes. It also helped former slaves legalize marriages and locate lost relatives, and assisted black veterans.
Cellular respiration uses oxygen in the chemical reaction that releases energy from food. Fermentation occurs in an anaerobic or oxygen-depleted environment. Because fermentation doesn't use oxygen, the sugar molecule doesn't break down completely and so releases less energy.
The Spanish-American war in 1889 resulted in Spain signing a treaty with the United States. The United States then annexed the Spanish colonies in the Philippines, Guam, and Puerto Rico.
