When were the articles of confederation agreed to by congress and ratified

Which would have been a push factor of immigration ?

Multiple choice. what was one effect of the emancipation proclamationa. european nation side with the confederacy b. it ended slavery in the union c. african americans could serve in the union army d. ending slavery became a goal of the civil war for the union

How were the european systems of mercantilism and capitalism similar during the 18th and 19th century