In the late 19th and early 20th centuries, there were hundreds of thousands of Bund members, both in the Pale of Settlement (the rural regions of the Russian empire that the Tsar confined most Jews to) and in diasporic centers like New York City. The Bund played an important role in the Russian Revolution and in the resistance to the rise of European fascism, and fought valiantly in the antifascist underground guerrilla bands in Nazi-occupied territories.
2/