What was the purpose of the Manhatten project​

The government used a controversial bailout program to a. homeowners struggling with mortgage b. foreign banks overload with that c.automakers on the verge of collapse d.construction companies losing jobs

Which of the following was used only once, to ratify the 21st amendment (repealing prohibition)? a.three-fourths of both houses of congress. b.three-fourths of the state legislature approved it. c.two-thirds of the state legislature approved it. d.ratifying conventions in three-fourths of the states approve it.

Which would be good historical evidence when studying manifest destiny?