What were the reasons that the British emerged as the preeminent power after succeeding against other European powers in the Indian subcontinent?

After the fall of Constantinople in 1453, Europeans began searching for a sea route to India and Portugese succeeded in its attempt in 1458 when Vascodoagma came to India via sea route. This paved way for other European powers to enter India.

Reasons for emergence of British as the preeminent power against other European powers:

1. Better military and naval organisation and Supremacy. Strong military power and commanders.

2. Backup from British government in case of threats or administration.

3. Lack of unity among native rulers and

nature of Indian state which showed a fragmented polity. After decline of Mughals.