Generally the farther a location is from the equator the its climate

What does the word submerged mean in the following sentence? after it rained for three days in a row, the streets were completely submerged.

Which of teh following would explain the importance of the trans-siberian railroad to russia's economy? (schoology test)

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?