Answer:
2. The legislative branch has the ability to declare war
3. To impeach means to charge someone (typically a government official) with misconduct (for ex. a serious crime, bribery, treason, or corruption) potentially having them being removed from office
4) The House of Representatives charge the federal government by approving, through a simple majority vote, articles of impeachment; subsequently goes to the senate where a trial takes place to determine whether the official will get impeached or not. If ruled by a two-thirds majority, the official is then impeached and removed from office