How did the success Of Portugal's exploration of Africa affect Spain?

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.

How was classical persia's extensive network of roads important to its civilization?

Why did jefferson make the louisiana purchase?