Complex sentence: Quebec is located in the eastern part of Canada, but is also historically and politically considered to be part of Central Canada (with Ontario) and the only one to have a predominantly French-speaking population, with French as the sole provincial official language.
Split into simpler sentences: Quebec is located in the eastern part of Canada, but is also historically and politically considered to be part of Central Canada (with Ontario). It is the only Canadian province to have a predominantly French-speaking population, and the only one with French as the sole provincial official language.