Question

Which branch of government declares war, approves constitutional amendments, and begin impeachment proceedings?

Answer 1

Hello Bre117!
There are three branches of government:  Executive, Legislative, and Judicial.
The one that declares war, approves constitutional amendments, and  begins the impeachment proceedings is the Legislative branch.  I would encourage you to dive deeper into each branch and find out specifically what each one does.
Hope this helps:)
Please comment on the correctness of this answer.

Answer 2

Executive.............................