Placing the earliest first, arrange the following countries in the...

The chronological order in which the given countries granted universal adult franchise is as follows:

Sri Lanka granted universal adult franchise in $1931$ under the Donoughmore Constitution.

Japan granted universal adult franchise in $1945$ after the end of World War II.

India granted universal adult franchise in $1950$ when the Constitution of India came into effect.

The United States of America granted true universal adult franchise in $1965$ with the passing of the Voting Rights Act, which removed discriminatory barriers that prevented African Americans from voting.

Therefore, the correct chronological order is Sri Lanka (1931$), Japan (1945$), India (1950$), and USA (1965$), which corresponds to the sequence $2, 3, 4, 1$.

Answer: 2, 3, 4, 1