In the history of events in russia in the 19th and 20th centuries, the slogan "one language, one church, and one ruler" refers to a czarist program to bring about
a. democratic reforms
b. self-determination
c. russification
d. communization

The best and most correct answer among the choices provided by your question is the third choice or letter C which is Russification.

Russification or Russianization is a form of cultural assimilation process during which non-Russian communities, voluntarily or not, give up their culture and language in favor of the Russian one.

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Asuffragette was a member of militant women's organisations in the early 20th century who, under the banner "votes for women", fought for the right to vote in public elections, known as women's suffrage.