The correct answer is: Neighboring states.
Manipur is a state in northeastern India. It is bordered by the states of Nagaland to the north, Assam to the west, Mizoram to the south, and the country of Myanmar to the east. The majority of the population of Manipur is Meitei, followed by Nagas, Kukis, and other ethnic groups.
In-migration to Manipur occurs from the neighboring states of Nagaland, Assam, and Mizoram. The main reasons for in-migration are economic opportunities, education, and security. The in-migrants are mostly from the lower economic strata and are looking for better opportunities in Manipur. They are also attracted by the better educational facilities in Manipur. The in-migration has led to an increase in the population of Manipur and has put a strain on the resources of the state.
The other options are incorrect because:
- Bangladesh is not a neighboring state of Manipur.
- Myanmar is a neighboring state of Manipur, but in-migration from Myanmar to Manipur is not as significant as in-migration from the neighboring states of Nagaland, Assam, and Mizoram.
- Nepal is not a neighboring state of Manipur.