Complex sentence: Hippolyte Mège-Mouriès created it in France in 1869 when responding to a challenge by Emperor Napoleon III to create a butter substitute from beef tallow for the armed forces and lower classes.
Split into simpler sentences: Hippolyte Mège-Mouriès created it in France, in 1869. He was responding to a challenge by Emperor Napoleon III to create a butter substitute for the armed forces and lower classes.