Which of the following was significant about the Czar's abdication in 1917? (if you don't know what the word abdication means, please look it up) * 1 point
a. It resulted in Russia's immediate withdrawal from the war.
b. It marked the end of three centuries of near absolute rule by the Romanov family.
c. It resulted in a strengthening of the Allied war position.
d. It led to uprisings in surrounding countries that called for the end of their traditional monarchies.