An order the president gives based on the authority of the constitution is called

The correct answer is "an executive order". The President holds the "ordinance power", which allows him to issue executives orders and also run the executive branch. As stated, this power comes from the Constitution. The President can also allow other members of the executive department to issue orders.

An executive order

Explanation:

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.