Why is it important to the southern planters to have a machine that could remove seeds from short-staple cotton

Which best describes how president kennedy apples to the audiences at the beginning of his speech?

For most of the twentieth century, percentage of men had a college degree compared to women. however, if we focus on the data for americans born in or later, a higher percentage of women hold college degrees.

Which country joined the allies because it was a rival of germany?