The Northwest Ordinance of $1787$

a$.$

was declared unconstitutional by the Supreme Court the following year.

b$.$

had far$-$reaching consequences because it banned slavery in the Old Northwest.

c$.$

created a situation in which the Old Northwest was governed as a colony by the federal government.

d$.$

called on new territorial governments to forcibly remove the Indians living there.

e$.$

allowed the importation of slaves into the Old Northwest for at least another twenty years.