Answer:
Step-by-step explanation:
Yes, the history of India would be changed if the regional rulers had united and had one central ruler because, during the ruler time, the main problem was religion because there were different rulers of different religions and all were in the support of their own religion.
if there was a central ruler there would be no religious discrimination on the basis of caste there would be a particular religion that all the people of the community would follow no different community would be there.
ok, so let's take an example of the starting days when humans were made no one used to know which cast we are or which religion we are all were the same. I am not saying religion is the wrong part of India but all the are the same the one who made us never discriminated against us by saying that you are a Hindu or you are Muslim. the one who made never discriminated against us why do we discriminate?
So, I think that if there would be a central ruler who would never discriminate on religious basis then there would never be a fight on religion, and be a brother country.