Simplify the following text for a Grade 9 native English-speaking person.
Original: The Cornish people in particular were actively encouraged to emigrate to Australia following the demise of Cornish mining in the 19th century .
Simplified: In the 19th Century , many Cornish people moved abroad to find jobs in mining . Today , descendents of Cornish people can be found all over the world , including Australia , Canada , America , Mexico and South Africa .