Each of these is basically an independent science, although specialists in one field frequently consult and cooperate with scholars in the other. Physical anthropology is generally classified as a natural science, while cultural anthropology is considered a social science. I hope this helps.
They launched voyages of exploration for trade reasons.
Political Action committees help politicians raise money so they can run for a seat in our federal government. Usually, the more money you have, the more advertising you can buy, and this helps you get elected.