I think that the answer would be A.) to keep African Americans in rural areas. they wouldn't have wanted the African Americans to stay in the rural areas because they wanted all that wide open space to themselves; hence the ghettos in urban areas.
Answer:
The river was a major transportation route and it's the last port before gulf of Mexico. It terminates at new Orleans. Crucial for trade.
Explanation:
Also it's the country's second longest river and provides water for millions as well as supporting billion dollar shipping industry.
Thomas Edison's invention of the light bulb changed American life tremendously. Thomas Edison was known for inventing what is called the light bulb, and that made a huge impact to have Americans live on a daily basis. Americans had a hard time seeing things in the dark, which caused a lot of complications when it comes to completing tasks or just going through and out buildings. Because of this invention, Americans could easily see things when inside a house, building, and when it's night time. The light bulb gave light so people can do tasks without having to do them in the dark. Without the light bulb, it would be very complicated to do things in the dark, and people would have a hard time going through the night or dark places.
The answer is definitely D