I have read a lot of posting about buddha campaign and after careful consideration I have arrived at this conclusion about the buddha.

1. The person under discussion was born as Siddhartha Gautam in Lumbini, Nepal
2. He gained the knowledge or the Bodhisatva in Gaya, India

Buddha is a state of being and Siddhartha achieved that state of being in India so essentially the Buddha was indeed born in India.