Catherine the Great of Russia

AUsed the liberal ideas of the enlightenment to modern russias laws
BEased the heavy burden previously placed on the serfs
CFought successful wars against turkey and poland
DMade the tax system of her country more quitable

Verified Answer :

Catherine the Great of Russia "A. Used the liberal ideas of the enlightenment to make modern Russia's laws", since the idea was to finally modernize Russia so it could compete with the west. 

Its not A!

Believe me i already try it and it not A