Question

after the russian revolution, each city in russia had a local council called a
duma.
soviet.
caucus.
congress.

Explanation:

After the Russian Revolution, the local councils in Russia were called soviets. The term "soviet" means council in Russian. The Duma was a legislative body in the Russian Empire before the revolution. A caucus is a meeting of members of a political party to select candidates or decide policy. A congress is a formal meeting or assembly.

Answer:

soviet