What is the supply of water to land or crops, typically by means of channels? please help i’m stuck on this test question

Because channels are the easiest way to transport water from one place to another.

Explanation:

In a way, channels are just like small, artificial rivers that humans have built since the dawn of civilization in order to take water from the source, to crops that are located further away from that source.

Irrigation channels have allowed civilizations to grow crops in areas where water resources are not so readily available, by relying on a single large water source. This is why all early civilizations developed around major rivers, and built irrigation channels that took water from those rivers to the many other agricultural regions.

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.