What transformed the stagnant economy of the south into a prosperous robust economy

What is zinn's approach to the study of history? what does he suggest occurs when history is told is the story of human progress?

7. how did the early egyptians use the flooding of the nile river to their advantage? they diverted the water to flood their enemy's lands and destroy their crops. they created an easier way to travel to the mediterranean sea and the indian ocean. they established a new water-based athletic event for the ancient olympics in greece. they devised an innovative irrigation system, which created a surplus of food.

Thomas jefferson was the president of the united states. first second third fourth