C.1200 to c.1800 -Assam valley ruled by Ahoms (Tai speakers from Shan state Burma)
1820s- British colonial rules begin in Assam valley
1839 –first armed conflict between arunachal tribes and colonial government
1873 –Inner line regulation demarcates British rule from tribal authority in the hills.
1874 – Arunachal hills incorporated into province of Assam as “unadministered tracts”.
1897 –first official colonial contact in Apatani valley.
1914 – Mc Mohan line drawn between India and Tibet/China
1935 –Act of India makes Arunachal hills as an excluded area.
1940- Semi-permanent government presence in Apatani Valley.
1947 – India Independence
1948 –Apatanis attack government outpost in the valley.
1954 – NEFA (NORTH EAST FRONTIER AGENCY) established to govern the Arunachal hills.
1962 – Chinese invade NEFA: Indian army arrives and stay.
1963 – part of NEFA given to new state of NAGALAND.
1972 – NEFA ends--- and become a union territory of Indian subcontinent.
1970s – Movements ---…
1987 – Arunachal Pradesh gets its name and statehood under India.
1988 – HINDU temple built in hapoli.
1990 –Christian prevails in arunachal—
2003 Christian church built across Apatani valley.
2004- donyi-polo hall built
NOTE: I AM TRYING HARD TO COLLECT DATAS... will give it later