What are some ways that race has been used to rationalize inequality?

Some ways that they use includes:
-False experiments that states races minorities are failing in the society because they naturally have lower level of IQ
- By overlooking the disadvantages that racial minorities have in order to compete with the majority in the society
- Covering up any discriminatory actions toward the minorities, etc

Ibelieve the answer is water and oil.

I'm going to go with 1,982 feet because of all of the ice.                                               ps its this is not the answer go with d 6,500.