When comparing presidents of the 1800s to those of the 1900s and 2000s, modern presidents are more involved in foreign policy. economic issues. social issues. labor policy.

Why are the majority of the world's economies mixed? what may happen to the "pure" types of economies (traditional, socialist/command, market capitalist) when they incorporate elements from other economic models?

The second westward surge reached the: mississippi river, appalachian mountains, oregon territory

Why is it difficult to determine which countries belong to europe and which belong to southwest asia