Answer:
The American colonies joined together to become a new country
Olmec culture is known for its large stone heads. They are built in big and large basalt boulders in which each head is uniquely done and one head is not a copy to the other head. The heads are part of Olmec civilization of ancient Mesoamerica. The Olmecs are the first known civilization in America and the first to have this kind of constructions. The common reason why they made this because of their religious belief.
They didn't because they weren't focused on it. It was the age of technological advancement, industry, wild parties and rich city slickers. The so called roaring twenties. Everyone was focused on factories and development that they didn't pay attention to the farmers.
It was <span>Francisco Vázquez de Coronado that set out to find the seven cities of gold.</span>