Historians often rely on both primary and secondary sources when supporting an argument, since it's important to use secondary sources to put the argument in context, and primary sources in order to make an original point.
Is it reliable, is it from the same time period of the event, is it written by or made by or the writer of the primary source has seen the event or has witnessed it or it is a autobiography.
Answer:
I will assume you are talking about the 3, 4, 5 on the page. 3. The ancient Egyptians grew things in two seasons and irrigated their fields by either using shadoofs or digging huge basins or pits. If they were using the shadoofs though, they had to be near a river. 4. It was important for the farmers in Egypt to figure out a way to solve the problem of water scarcity because that way they will have crops to eat, sell, and trade. If that happens, the civilization will weaken. 5. If one year, the Nile river did not flood or flooded too much, the result would be that the farmers wouldn't be able to produce crops. If they cannot produce crops, then they will not be able to eat, sell, or trade.
Explanation:
Indoor electric lamps, telephones, electric steelcars, and automobiles.
