The histories of Kush and Egypt are intertwined with each other because they were reliant on each other. How did their interdependence work, and why did each take control of the other in turn? I need 2-3 sentences!!

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Explanation:

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.