Solution:Correct Matching of Trade Union Progress with Years:
A. Era of formation of Modern Trade Unionism → III. 1918–1924: This phase followed World 'War I and saw the rise of nationalist movements in India. It marked the beginning of modern trade unionism with the establishment of the All India Trade Union Congress (AITUC) in 1920, making organized labour a significant force.
B. Split in AITUC into Leftist & Rightist wings → IV. 1925-1934: During this period, ideological differences emerged within AITUC. The communist and socialist factions pushed for radical action, while moderates preferred constitutional methods, causing a major split.
This resulted in the creation of bodies like the All India Trade Union Federation (AITUF) by moderates and the Red Trade Union Congress (RTUC) by communists.
C. Unity forged among Trade Unions → І. 1935-1938: Efforts were made to unify the fragmented trade unions. The previously divided factions-AITUC, NTUF, and others-reconciled during this period, leading to greater solidarity and a stronger labour movement.
D. World War II brought chaos in Industrial Relations → II. 1939-1946: The Second World War created economic instability, rising prices, and worsening labour conditions. Strikes and agitations became common, and the government increased its involvement in industrial relations through tripartite consultations to manage unrest.