Hi the answer is
D. Trading with other empires
Answer:
JUDICIAL REVIEW
Explanation:
this is a check that Congress has on the legislative branch to declare any act unconstitutional to remember go judicial review clap clap unconstitutional
Cold case units/departments.
A cold case is any criminal investigation by a law enforcement agency that has not been solved for (generally) at least one year and, as a result, has been closed from further regular investigations.
Cold case units reexamine these closed cases and try to solve them.
Its a. of course thats the answer