Which historical development was a catalyst for the political and social change discussed in the source?

A- world war II

B- the Crimean war

C- the Russo - Japanese war

D- World War I

World war I is  initiated to be the  catalyst for the political and social change.

Explanation:

There were many social and political changes which were initiated in the first world war. Some of the social changes were the upheaval of fashion, people especially women started ton give up old and conventional way of dressing and they started to socialise. Urbanization also was initiated . Many started to migrated to cities for livelihood. women' rights were given importance.

Women staged protests and claimed equal rights on part with men as a citizen of the nation, they also asked enfranchisement rights. Civil rights started to begin which highlighted that all must be treated equally and overcome the racialist bias.

There were also major political changes. Many started to appreciate the success of  Democracy after the declaration of independence in America. Monarchy form of government were overthrown and people realized that they were the key factor ij the society.

according to the report, the government has imposed restrictions on freedom of speech, freedom of the press, freedom of assembly, and freedom of association. the official media remained tightly controlled by government censorship and obstruction. restrictions on the freedom to assemble remain a problem in vietnam.

explanation:

i think it was   tsar alexander ii