Candidates should focus on major milestones in Indian history, including the Independence Movement, the role of key figures like Gandhi and Nehru, and significant events like the Partition and the formation of the Constitution. Understanding the socio-political context surrounding these events is crucial for the UPSC exam. Additionally, candidates should be aware of global history's impact on India, such as colonialism and post-colonial developments. This historical framework provides a solid foundation for answering questions and engaging in discussions about contemporary societal issues.