Simplify the following text for a Grade 13 native English-speaking person.
Original: White supremacist groups can be found in some countries and regions with a significant white population , including North America , Europe , Russia , Australia , New Zealand , South Africa and Latin America .
Simplified: White supremacist groups can be found in most countries and regions with a large white population , including North America , Europe , Australia , New Zealand , South Africa , and Latin America .