The Suez Canal between the Sinai Peninsula (Asia) and the rest of Egypt (Africa).
The ridgeline of the Darien Mountains, where water flows different directions on either side (the watershed boundary), and Colombia and Panama meet, is a common dividing line for the Americas.
Answer:
The direction of control over time gradually shifts from farmer to marketer and finally the direction of control of what is to be produced and at what price is reversed.
Explanation:
