Question

the long march took place in the year
1911
1924
1934
1937

Explanation:

The Long March was a pivotal military retreat by the Chinese Red Army, which began in October 1934. The other options correspond to different key historical events: 1911 is the year of the Xinhai Revolution, 1924 marked the start of the First United Front, and 1937 was the start of the full-scale Second Sino-Japanese War.

Answer:

1934