[2] From here the border proceeds to the south-west through the Mishmi Hills, except for an Indian protrusion at the Chaukan Pass, then continuing through the Patkai and Kassom Ranges.
It then follows this river southwards for a long stretch down to the Chin Hills, before turning west and proceeding to the Bangladeshi tripoint via a series of irregular lines.
The Burmese relinquished control over Assam, Manipur, Rakhine (Arakan), and the Taninthayi coast, thereby delimiting much of the modern boundary in general terms.
[3][4] In 1834 the Kabaw Valley areas was returned to Burma and a modified boundary delimited in this region, dubbed the 'Pemberton line' after a British commissioner, which was later refined in 1881.
[12][13] In 1968, following a variety of insurgencies in its northeastern states, India unilaterally introduced a permit system for travelling across the border.
[12] In 2004, following the growth of drug trafficking and arms smuggling, India reduced the travel limit to 16 km (9.9 mi) and allowed border crossing only through three designated points: Pangsau (Arunachal Pradesh), Moreh (Manipur) and Zokhawthar (Mizoram).
[23][24] Four Northeast Indian states share the border with Myanmar, i.e. Arunachal Pradesh, Nagaland, Mizoram, and Manipur.
The Indian Home Ministry and its Myanmar counterpart completed the study within six months and, in March 2003 began erecting a fence along the border.
[26] Issues have been raised that many local ethnic communities, such as the Kuki, Naga, Mizo, and Chins whose lands straddle the regions between the two countries, will be divide by this fence.
[27] For example, during two year period between 2001-2003 alone 200 security personnel and civilians died in the militancy-related violence in the region,[27] and in 2007 a violent boundary dispute arose among the locals regarding the ownership of nine border pillars in Manipur.