Passage: The Kashmir issue has been the main cause, whether direct or indirect, of all major conflicts between the two countries with the exception of the Indo-Pakistani War of 1971 where conflict originated due to turmoil in erstwhile East Pakistan (now Bangladesh).\n\nQuestion: Based on this passage, what is the main cause of conflict between india and pakistan?
Let’s work this out in a step by step way to be sure we have the right answer.
The Kashmir issue
The important part for answering this question is: The Kashmir issue has been the main cause, whether direct or indirect, of all major conflicts between the two countries with the exception of the Indo-Pakistani War of 1971 where conflict originated due to turmoil in erstwhile East Pakistan (now Bangladesh).

.

So, the final answer is The Kashmir issue