HELP ME please and thank you

It would be the second choice. B if you will.

Explanation:

Early civilizations used all these methods, but not for the reasons stated. If you look at the Nile, canals were used in early civilizations to help control and use for irrigation.

Hope this helps.

s the president shall be commander in chief of the army and navy of the united states, and of the militia of the several states, when called into the actual service of the united states; he may require the opinion, in writing, of the principal officer in each of the executive departments. sooo yeahhh

explanation:

it would have to be gasioline