The question pertains to the General Awareness topic, specifically focusing on the political history of India. The Jharkhand Mukti Morcha (JMM) is a regional political party in India, primarily based in the state of Jharkhand.
In the year 1983, the Jharkhand Mukti Morcha experienced a significant split. The party, which was originally united, divided into two distinct groups. This division was majorly due to internal disputes and differing ideologies within the party leadership, which led to the formation of two separate factions.
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Thus, the correct answer is that the Jharkhand Mukti Morcha was divided into two groups in 1983.
What is grouping of countries into regional clusters based on geographic proximity referred as?