Complex sentence: Sasha Pieterse was born in Johannesburg, South Africa on February 17,1996 then she emigrated over to the United States when she was 3 years old where she was raised in Las Vegas before moving to Los Angeles.
Split into simpler sentences: Sasha Pieterse was born in Johannesburg, South Africa on February 17,1996. Emigrating over to the United States when she was 3 years old, she was raised in Las Vegas before moving to Los Angeles.