Complex sentence: Mikhail Mikhailovich "Michael" Karpovich (1888-1959) was a Russian-American historian of Russia and one of the fathers of Slavic Studies in America.
Split into simpler sentences: Mikhail Mikhailovich "Michael" Karpovich (1888-1959) was a Russian-American historian of Russia. Karpovich is remembered as one of the fathers of Slavic Studies in America.