I would say its because no one really decided to change anything. No one during the old ages really knew how to do anything and only used what they had and what was closest to them.
<span>That depends on the details. With the whole Trump and Russia saga, congress could elect to form a commission like the 9/11 Commission or they could form a select committee like the House Select Committee on Benghazi. The idea is to have an investigation that claims more authority that a standard congressional committee. So, the correct answer is A JOINT COMMITTEE. </span>
Temporary
This can be best known as a temporary, interim or emergency government. A temporary government is put in place when there is a large void due to the collapse of a large government.
It was the (4) Mongols who used the stirrup, skilled horsemanship, and siege warfare techniques to conquer much of Asia and part of Europe in the 12th and 13th <span>centuries</span>