Simplify the following text for a Grade 6 native English-speaking person.
Original: `` age of ( the male demon ) Kali '' , or `` age of vice '' ) is the last of the four stages that the world goes through as part of the cycle of yugas described in the Indian scriptures .
Simplified: `` Age of Kali '' , `` age of vice '' ) , is one of the four stages or yugas that the world goes through .