Simplify the following text for a Grade 7 native English-speaking person.
Original: The Province of Cuyo got ultimately divided in 1820 , and Mendoza parted ways with San Luis and San Juan Provinces .
Simplified: Mendoza is a Province of Argentina , located in the region called Cuyo . The province borders San Juan in the north , San Luis and La Pampa in the east , NeuquÃ n in the south , and Chile to the west .