I Think The answer is a I hope it helps My friend Message Me if I’m wrong and I’ll change My answer and fix it for you
As for the rivers, the colonists were aware you must have water to successfully maintain life whether it be human life or plant life, it is necessary. Also being close to water helped them in the workforce, like carrying out trade or fishing It was a "win win" for them.
keep the Russians from taking over Europe. just too the test and passed
The answer would be over production
B is the correct answer.
While the Indus Valley has gotten more attention in recent years, it is not considered one of the three classical civilizations.