Simplify the following text for a Grade 7 native English-speaking person.
Original: Migros is one of Switzerland 's largest enterprises , its largest supermarket chain and largest employer . It co-founded Turkey 's largest retailer , Migros TÃ 1\/4 rk , which became independent of Migros Switzerland in 1975 .
Simplified: Migros is a supermarket chain found in Switzerland and other countries .