Simplify the following text for a Grade 12 native English-speaking person.
Original: Members of middle class , who are predominantly white but whose ranks include growing numbers of black , colored and Indian people , have lifestyles similar in many respects to that of people found in Western Europe , North America and Australasia .
Simplified: Members of middle class , who are mostly white but whose ranks are growing numbers of black , colored and Indian people , have lifestyles similar in many ways to that of people found in Western Europe , North America and Australasia .