Because today we have more means of transportation, communication, and more advanced tech.
The understanding of gravity was essential in the developmentof Albert Einstein theory of relativity. Which describe relationships between matter and motion.
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.
On this day in 1517, the priest and scholar Martin Luther approaches the door of the Castle Church in Wittenberg, Germany, and nails a piece of paper to it containing the 95 revolutionary opinions that would begin the Protestant Reformation
