To defend territory would be the correct answer.
Nobody else could build that canal. The Americans are the only people who could build them. They also made the Panama canal so that they could access the necessary territory.
They continued their prosperity by moving south of the Huang River. There they <span>ruled for another 150 years.
Hope this helps!:)</span>
The nuclear family is straight forward wife/mother husband/father and the children that they have together.
