How was slavery mentioned in the northwest ordinance?

a. slavery was prohibited north of the ohio river.
b. slavery was prohibited in just the northern states.
c. slavery was prohibited in just the southern states.
d. slavery was not discussed in the northwest ordinance.

When using the scientific method, what should be the first step? a.) gathering information on the problem. b.) stating the problem. c.) analyzing and interpreting data.

Where did the term “iron curtain” originate? the warsaw pact used the term iron curtain as a code word for communism. in a 1946 speech, british prime minister winston churchill said an iron curtain had fallen across the continent of europe. while visiting western europe in 1946, u.s. president harry truman commented that the mountains there looked like iron curtains. russian general secretary joseph stalin instructed citizens of eastern europe to hang iron curtains over their windows to protect themselves from stray bullets.

Why is the treaty of paris (1763) important to the age of discovery/exploration?