Which two hemispheres does the Equator separate?

Which of there factors contributed most to us westward expansion in the second half of the nineteenth century?

When reading a textbook blank. a) it’s safe to assume that the ingot is not biased b) you should watch for fallacies in information and author bias c) you should fact check everything you read d) it is understood that academic sources are not biased

What border separates sonora and chihuahua national border state border physical boundary natural boundary