What was the most difficult obstacle to overcome in the creation of an autonomous state after Indian independence was achieved?

The correct answer is D) Indian princes' inability to decide on a format of government

Explanation:

When the British gave Independence to India in 1947 it was an extremely fractures land and not an autonomous state. This is because 'British India' consisted of nearly 400 so-called princely-States that were not part of the British crown directly, but were allies who controlled their own State, including many which even had their own currency.

When the British left, New Delhi politicians wanted to create an autonomous State. While there were vast differences in races, creed and religion, the biggest hurdle came when many princes refused to join the Indian Union.

Some were skeptical of Congress party and could not agree to a formal agreement. Eventually Vallabhbhai Patel, an influential politician was able to bring together difference princes and convinced them to join India.