What are some key features in the northwest ordinance in 1787

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.

Somebody save the ! what was greek math and science also medicine

Where did the first african american fighter pilots begin training?