Explanation: Sikkim, a small Himalayan state in northeastern India, has a rich and complex history. Originally an independent kingdom, Sikkim was ruled by a monarchy until the mid-20th century. The political landscape of Sikkim began to change in the 1970s, as the region faced internal and external pressures that led to its eventual merger with India.
In 1974, a referendum was held in Sikkim to determine the will of the people regarding the state's future. The referendum resulted in a majority vote in favor of Sikkim becoming a part of India. Following this referendum, the Indian Parliament passed the 35th Amendment to the Constitution of India, which officially incorporated Sikkim as the 22nd state of the Indian Union.
On 16 May 1975, the formal declaration was made, and Sikkim officially became a state of India. This date is significant as it marks the end of Sikkim's status as a protectorate and its transition into a full-fledged state within the Indian Union. The change in status was a result of both internal political movements and external pressures, including the desire for greater economic and political integration with India.
Understanding the historical context of Sikkim's statehood is crucial for comprehending the broader political and social changes that occurred in the region during the 1970s. The transition from a monarchy to a state within the Indian Union reflects the complex interplay of local, national, and international factors that shaped the political landscape of Sikkim and the broader northeastern region of India.
In summary, the correct date for Sikkim's statehood is 16 May 1975, marking a pivotal moment in the political history of Sikkim and its integration into the Indian Union. This date is significant for students of Indian history and geography, as it represents a key event in the political integration of the northeastern states of India.