Complex sentence: Daniel Roche (born in 26 July 1944) is a French social and cultural historian, widely recognized as one of the foremost experts on the cultural history of France during the later years of the Ancien Régime.
Split into simpler sentences: Daniel Roche (born in 26 July 1944) is a French social and cultural historian. His primary field of research is the cultural history of France during the later years of the Ancien Régime.