Ida b wells responded to the question of race relations by documenting the lynchings taking place in the United States.
The advantage for US business in 1800 was that the government sold land at a low cost. The federal government had much land for sale at a rate of 1.25 Dollars per acre. Adjustments were made, and by 1854 the land was sold at an average price of 12.5 cents per acre where more than 2 million acres were sold. Lots of the land had been in the market for over 30 years before the reduction of prices by the federal government.
A Ghetto, was the location were Jews during the WW2 were marginated, as the expression of an anti-semitic racial policy of Adolf Hitler that became institutionalized.
Most of the Ghettos were established all over Germany, Poland, parts of France. There the conditions for a living were extremely bad: they lacked the most essential things for a living. Many didn't have good energy and water supply. The security of the neighborhood is also compromised. Many unrest can happen and there is little to be done as authorities will not care. As leaving a Ghetto was illegal, the people escaping them were systematically executed.
Perhaps the most representative Ghetto is the nowadays Warsaw Ghetto, that serves as museum and memorial for Nazi crimes against humanity. This Ghetto once had almost half a million people living on it.
Below you can see how many Ghettos mostly in East Europe were later transformed into Death Camps:
They fought over land use and ownership