It would be "<span>Slavery was an established institution until the Twelfth Amendment was ratified on December 18, 1865" that is not true, since it was in fact the 13th amendment that ended slavery. </span>
There were several events that led up to the creation of NASA, but the biggest was the space race with Russia, which was especially heightened after Sputnik.
By their nannies or governess
The Mississippi is important to American because of how long it is. It starts in Minnesota and drains into the gulf of Mexico. Many people have built their homes along and near the "Mighty Mississippi" because you can transport goods down it via boat to many states, you can use it to farm and get water to dry locations and grow many crops. It's used for hydroelectric power for large cities, it drains off flood water to prevent flooding in the Midwest. It was very important during the civil war and many boats battled for control of it. And it's a lot cheaper and faster to transport on the river than on the road, it has many dams that help local economies and create job opportunities for locals.
The Dust Bowl.
The farmers had overfarmed their land and had lost the valuable top soil. Take into consideration a drought as well, the high winds of the plains took the overfarmed (and dry) soil and blew it across the land.
