This paper examines Punjab politics during the period 1900–1940, a transformative era marked by socio-political upheavals, agrarian movements, communal tensions, and increasing resistance to British colonial rule. The study explores how Punjab, a predominantly agrarian society with a diverse religious and cultural demographic, became a crucible for both nationalist and communal radicalization. It highlights the interplay between the colonial government’s policies, such as the Land Alienation Act (1901) and the Montagu-Chelmsford Reforms (1919), and the emergence of political movements that sought to challenge or reinforce the existing power structures. The research delves into the role of significant actors, including agrarian elites, nationalist leaders, and communal organizations, in shaping the political discourse. It examines the impact of the Ghadar Movement, the Akali Movement, and the activities of revolutionary groups like the Hindustan Socialist Republican Association (HSRA) on Punjab's political landscape. The period also saw the rise of communal politics, with organizations such as the Unionist Party striving to maintain a balance between agrarian interests and communal harmony, while factions within the Muslim League, Hindu Mahasabha, and Akali Dal pursued divergent, often radical, agendas. The study argues that the radicalization of Punjab politics was not a uniform process but a fragmented and multi-dimensional phenomenon influenced by global events such as the World Wars, the Great Depression, and the Indian Nationalist Movement. By analyzing archival records, legislative debates, and political memoirs, this paper sheds light on the socio-economic and ideological currents that underpinned the growing polarization and paved the way for the eventual Partition of Punjab in 1947.