Answer:
The answer would be a theocracy
Here are some FUN FACTS to help expand your knowledge :)
Fun fact 1: In Greek Theocracy means "rule by gods"
Fun fact 2: This Government was first employed in the first Century A.D. by Josephus Flavius
Fun fact 3: This Government was mostly practiced by the jews
Fun fact 4: It was to be told that Moses ruled a theocracy
Fun fact 5: Islamic States, Holy See (Vatican City), Israel, and Central Tibetan Administration
Fun fact 6: Theocracy is a compound word for Theos (god) and Kratia (rule)
Fun fact 7: Some ancient time Theocracies are Pharaos, Babylonians, Assyrians, and Cretans.
Fun fact 8: There is a protected Theocracy at a place called Mount Athos.
Fun fact 9: In 2011 most Theocracies were ruled in islamic states
Relic Boundary is the correct answer :)
The correct answer is - biomass from the decomposing grasses.
The Midwest is a region known for its highly fertile soil. The reason for this is that the weathered bedrock combines with huge amounts of biomass. The biomass is almost entirely form the grasses. The grasses grow naturally in this region and they dominate the landscape. They grow and die out relatively quickly, as most of those grasses are one season grasses. They manage to create very large amounts of biomass every year, and also they decompose very quickly. The grasses also are high in nutrients, so once decomposed, they give the soil a lot of nutrients as well, which makes it very fertile and suitable for agriculture.