<span>Mesopotamia means “the land between the rivers” in Greek.
those rivers are Tigris and </span><span>Euphrates</span>
Well this really depends on your needs. California, I would say, is the best state because the weather is great, it hardly ever rains, L.A. is in California, Hollywood is in California, and, if you live in San Diego, you are close to ALL types of terrain: desert, ocean, mountains, and city.
Judicial branch can check both legislative and executive branch by declaring laws as unconstitutional. For example, when Trump did the travel ban a federal judge was able to overturn it.
The Tennessee Valley Authority is a federally owned corporation in the United States created by congressional charter on May 18, 1933, to provide navigation, flood control, electricity generation, fertilizer manufacturing, and economic development to the Tennessee Valley.
You haven't given the research techniques to be analyzed so its impossible to answer the question. Perhaps you just failed to complete your inquiry.