He was the first president, and pretty much showed that we can transfer power, because most people thought he was going to become a "king" and not transfer his power.
Hope this helped!
The south improvement company in 1872 caused rockefeller able to monopolized around 90% of the oil market in North America.
The south improvement company largely increased the number of oil and railroad companies in southern states. Because of the increase in numbers, the market for oil and railroad companies became saturated. This lead many of his competitors to bankruptcy, which is why the competitors called it a conspiracy.
There were many factors that allowed the Byzantine Empire to last a 1000 years after the end of the Roman Empire which include the fact that Constantinople, the capital of the Byzantine Empire, was protected with walls that lasted almost the entire 1000 years, making Constantinople, and the center of the empire's economy/culture impervious to invaders.
Slaves were involuntary immigrants to the U.S. during the first wave of immigration.