Which event played the greatest role in opening up western lands to settlement in the late 1700s? a the mexican cession b the louisiana purchase c the missouri compromise d the northwest ordinance?

What might balance federal and state powers present a problem

How did slavery end in the united statesa. it ended with the emancipation proclamationb. it ended when the union won the civil warc. it ended with the fifteenth amendmentd. it ended with the 13th amendment

Why is the supreme court decision in roe v. wade so controversial.