Which best defines medium of exchange

Areal estate salesperson is often approached by home buyers of a particular race. his usual practice is to show them homes in neighborhoods where most of the residents are the same race as the buyers. he avoids showing these buyers properties in integrated areas. this is called:

Which of the following colonies would most likely have agreed with this stamens the king of england knows what is best for the colonies

In human relations, the irritation threshold is the