If I remember correctly when learning this, it's D the Rule of Saint Benedict, but I could be wrong... Perhaps try Googling it?
Answer:
The Senate and the House of Representatives
The answer is trade barrier.
thx
Answer: It separates Georgia's Coastal Plain from its Piedmont region. Piedmont land is higher in elevation than that of the Coastal Plain, causing rivers that begin in the Piedmont to to gather speed - or “fall” - as they pass through the Fall Line into the Coastal Plain.