Complex sentence: King, p.64 Soviet linguist M. V. Sergievsky studied the linguistic variety in the MASSR and mapped two dialects, one of which similar to the spoken variety in Bessarabia being chosen as standard, to pave the way for the "liberation of the Bessarabians".
Split into simpler sentences: King, p.64 Soviet linguist M. V. Sergievsky studied linguistic variation in the MASSR and identified two dialects. One, similar to the spoken variety in Bessarabia, was chosen as the standard, to pave the way for the "liberation of the Bessarabians".