B. The rivers were used to sustain life by growing crops and food and having an unlimited drinking supply.
There are twelve inches in a foot. If you multiply 18 by 12, the product will be how many inches are in 18 feet.
18 * 12 = 216
336 > 216
So yes, 336 inches is greater than 18 feet.
Cuba is one of few Marxist–Leninist socialist states, where the role of the vanguard Communist Party is enshrined in the Constitution. Independent observers have accused the Cuban government of numerous human rights abuses, including arbitrary imprisonment. Culturally, Cuba is considered part of Latin America.