Ever since the occupation of Tibet, China had focused on Ladakh

Detailed

 It is in August 1959. consistent with one claim, the then Prime Minister Pt. Nehru had said within the Lok Sabha on eastern and north-eastern Ladakh that there's a neighborhood within the country which isn't only extremely cold but also uninhabited and barren. Grass doesn't grow there. Incidentally, three years after the statement, India had to fight the war in China during this area. 

               

After this battle, many countries had heard the name of Ladakh for the primary time. But the importance of this area for India and China has been there for several centuries, thanks to its geographical and strategic position, the armies of both countries are facing one another. Ever since the occupation of Tibet in 1950, China was looking greedy towards Ladakh. 

1834: Ladakh was free before Dogra 

This Himalayan region was free until the arrival of the Dogra rulers in 1834. At that point, its political status was almost like Bhutan and Sikkim. Culturally and historically, Ladakh had a robust reference to its neighboring region, Tibet. 

Dogra ruler showed interest

 After the capture of Kashmir in 1819, Maharaja Ranjit Singh extended his ambitions to Ladakh. But before that, the Dogra ruler of Jammu, Gulab Singh took up the task of joining Ladakh in Jammu and Kashmir. At that point, British rule rooted in India showed no interest in Ladakh.

 Once Tibet-Ladakh was one, then the separated

 Ladakh was separated from the Tibet Empire after the assassination of King Langdarma in 742 AD. After this, it remained free for an extended time. Western Tibet was also a neighborhood of it a few times. At one stage it had been the middle of import-export between Central Asia and Kashmir. At an equivalent time, a trade route from Karakoram Pass to Yarkand and Kashgar to Chinese Turkistan was also coming into existence.

 1834: Gulab Singh captured Ladakh

 In 1834 Gulab Singh sent his general Zorawar Singh Kahludia with four thousand soldiers to overcome the world. On 16 August 1834, the Dogras defeated five thousand soldiers of the Bhotia ruler and captured Ladakh. After this, Ladakh came under the Dogra rulers. 

1845:

 Under the British, in May 1841, under the leadership of the Chinese Qing, Tibet invaded Ladakh to expand its empire. This led to the Sino-Sikh War. The Chinese-Tibetan army had to face defeat within the war. Then there was the Treaty of Chushul, during which it had been agreed that from now on nobody would infiltrate other's areas. After the Sikh-British War in 1845–46, Jammu and Kashmir and Ladakh fell from the Sikh Empire and came under the British Empire. 

Britishers failed on Ladakh 

The British used Jammu and Kashmir as a buffer zone. This buffer zone wont to meet the Russians. He then tried to limit the border of Jammu and Kashmir and Ladakh, but couldn't do so thanks to the influence of Tibet and Central Asia within the region.

 Nehru was against the Chinese road, the war of 1962

 Pandit Nehru became very uncomfortable after the Chinese road was inbuilt Ladakh. He knew that when the road was built, then the Xinjiang province, located on the Chinese border, would have direct contact with Tibet. Nehru also held talks with China. After this, the war of 1962 had to be fought.

Two reasons behind the newest conflict 

 1- Ladakh is in the middle of mutual conflict again. Knowledgeable people believe two reasons behind this.  Till 2013, India's infrastructure was negligible. From 2015 onwards Ladakh came into the priorities and a rapid structure was created.  The special status of Jammu and Kashmir was removed on 05 August 2019. 

 2- China became uneasy after making Jammu and Kashmir and Ladakh a union territory. China believes that by making Ladakh a union territory, India will emphasize the annexation of the whole region. within the past several years, Xinjiang, located in Aksai Chin, has become vital for Chinese thanks to internal reasons. Claims supported the legacy of imperialism India continued to say Ladakh thanks to the maps inherited from British rule. India kept saying that the world had a border with China, which was ensured by treaties, but the Chinese rejected the demarcation claim. The claims made on each side were made on the idea of inheritance from imperialism. 

China's interest in Ladakh grew after the Occupy Tibet in 1950, and particularly after the Tibetan rebellion erupted in Lhasa in 1959 and India granted asylum to the Dalai Lama. Moving forward, the Chinese started building roads in Ladakh during 1956–57 to regulate Tibet.