Complex sentence: The first militant outfit to emerge in the region was the Hynniewtrep Achik Liberation Council (HALC), it was formed in 1992, aiming to protect the interests of Meghalaya's indigenous population from the rise of non-tribal ("Dkhar") immigration.
Split into simpler sentences: The first militant outfit to emerge in the region was the Hynniewtrep Achik Liberation Council (HALC). It was formed in 1992, aiming to protect the interests of Meghalaya's indigenous population from the rise of non-tribal ("Dkhar") immigration.