Simplify the following text for a Grade 8 native English-speaking person.
Original: After the abolition of slavery in 1835 , many Indian and Chinese workers were brought to work the land , and cultivate sugar cane , at that time used to produce rum .
Simplified: After the end of slavery in 1835 , many Indian and Chinese workers were brought to work the land , and take care of sugar cane , at that time used to make rum .