The Olmec civilization existed from around 1400 BCE to around 400 BCE. They established trade routes

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.

What is the term for a short statement about history that has not been yet been proved

What was a challenge for president truman’s political agenda in 1950