There were only 3 races when you and I went to school, but the powers that be seem to have changed that assessment in the present day!
I guess we're just two old fossils. After a little research, the number,according to which source you read, ranged from 0 to thousands. It seems every ethnic group now gets referred to as a race. The U.N. uses the term ethnic groups, so I guess that is the PC answer.
There are 3 races-but a lot of people haven’t taken the time to look up the definition of a “race” and an “ethnic group”-that is probably why they are confused and call every group of people from every country a “race”...