The establishment of the first human settlements has been due to numerous factors, some more important than others. The most important factors were drinking water, fertile soil, production of crops, and irrigation water. These four things enabled the humans to start doing something they have never done before, settle in one place permanently and being bale to survive in it without depending strictly on mother nature. This is why the first human settlements have been made in the valleys of the big rivers. Once the humans saw the potential of some wild crops, they started to plant them. The river valleys were the best places for this. The soil was deep and very fertile, and each year there were new fertile deposits from the floods. There was always water fro drinking and irrigation, so the crops were thriving and the humans had the basic things for living at disposal. This resulted in surplus in food production, so the humans solved their biggest problem, started to use the spare time, and specialize in all sorts of things.
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Plessy v Ferguson was a landmark case and was a United States Supreme Court decision to uphold the laws that kept segregation, under the phrase "separate but equal". This regarded public facilities for the most part including buses, bathrooms and water fountains. This was brought from the Committee of Citizens in New Orleans, so this was applied across the board in Louisiana.
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Latitude - is a determiner of agriculture because it establishes the general seasonality of the place, and the differences in sunlight received depending on the time period.
Ocean temperatures - the ocean is a force that makes the climate milder. Warm ocean temperatures mean warmer climates, which tend to be better for agriculture, while the opposite occurs when ocean temperatures are low.
Wind currents - wind currents can determine precipitation or the abscence of it. It can also bring harmful events for agriculture like dust storms, or tornadoes.
Elevation - higher elevations tend to be less fertile than lower elevations because they are colder. However, this is not always the case, and some high altitude regions are very fertile, for example, the Central Valley of Mexico.
The stratosphere is the second major layer in the Earth's atmosphere. It is located above the troposphere and below the mesosphere. An interesting characteristic of this layer is that heat increases with altitude due to ultraviolet light being absorbed from the sun within the ozone layer.