During the debate over reconstruction plans, one leader voiced this opinion: Southern institutions “must be broken up and relaid, or all our blood and treasure have been spent in vain.” Who most likely expressed this opinion?

That opinion was expressed by Thaddeus Stevens, a radical Republican.

Explanation:

Stevens wrote this opinion in a letter he wrote to Andrew Johnson. In that letter he described how the union should act when the confederate states were reintroduced into national politics. For Stevens, the reconstruction was being done incorrectly, taking the blame off the Confederates and not establishing severe punishments for all the damage they did during the war. In addition, Stevens did not think it right that the president should lead the reconstruction guidelines, but that the legislative branch should do so, because that branch would have more legal and just bases to establish everything that should be done.

the answer is

a) revise existing treaties

b) do away with political alliances

c) prevent the spread of communism

d) bring an end to european colonization

the main goal of the southeast asia treaty organization was to prevent the spread of communism in southeast asia.