बे ओनसोला 1972 माथायनि 20 जानुवारियाव गंसे उदां राजखान्थायारि मानथाय मोनदोंमोन , जेब्ला बियो गंसे अरुमाचल प्रदेश मुङै मिरु खुथायनि ओनसोल हिसाबै पोसावजादोंमोन ।
This region acquired an independent political status in January 20 1972 when it was declared as a Union Territory under the name of Arunachal Pradesh .