Complex sentence: Jean Baptiste Bourguignon d'Anville (born at Paris July 11 1697--1782), perhaps the greatest geographical author of the 18th century, was both a geographer and cartographer who greatly improved the standards of map-making.
Split into simpler sentences: Jean Baptiste Bourguignon d'Anville (1697--1782), perhaps the greatest geographical author of the 18th century, was born at Paris on the 11th of July 1697. Both a geographer and cartographer, he greatly improved the standards of map-making.