India is a vast country that shares its borders with several countries. Among them, China is one of the most important countries that India shares its borders with. India and China share a long and complex border, known as the Line of Actual Control, that stretches from Ladakh in the north to Arunachal Pradesh in the east.

The Indian states which share a border with China include Jammu and Kashmir, Sikkim, and Arunachal Pradesh. These three states are located in the Himalayan region of India and have become strategic points for both India and China.

Jammu and Kashmir is the northernmost state of India. The Line of Actual Control (LAC) between India and China runs along the Aksai Chin region of Jammu and Kashmir. Although both India and China claim the Aksai Chin region, it is currently under Chinese control.

Sikkim is situated in the eastern Himalayas. It shares its border with Tibet and Bhutan, as well as China. The mountainous terrain of Sikkim is home to some of the most breathtaking natural beauty and is a popular destination for tourists.

Arunachal Pradesh is the easternmost state of India, located along the Himalayas. The border between India and China runs through the eastern part of the state. Arunachal Pradesh is home to many ethnic groups, including Adi, Apatani, Idu, and Hrusso.

These three states are strategically important for India, as they provide access to the Tibetan plateau and other parts of Central Asia. India and China have a long and complex history of border disputes. In recent years, tensions have increased between the two countries, but so far, there has been no major incident along the Line of Actual Control.

In conclusion, India shares its borders with China in three states: Jammu and Kashmir, Sikkim, and Arunachal Pradesh. These states are strategically important for both countries and are home to some of the most stunning natural beauty in India.