LOA – Line Of Actual Control

Line of actual control is the dividing line between the Indian tertiary and Chinese tertiary.Zhou Enlai first used this term in a letter to Shri Jawahar Lal Nehru in 1959.  

India and China have a history of three wars: Sino Indian war 1962 , chola incident 1967,Sino Indian skirmish 1987.
China considers it 2000 km ,while India considers it as 3488 km.Lac is divided into three parts.These parts are Ladakh , Utarakhand and Himachal Pradesh and Arunachal Pradesh and Sikkim.