You are trying to buildup contentious straw-men.

As pointed out, India's history and glory predates Muslims and Islam by thousands of years.

The difference between "Islamic Invasion" and the "British Invasion" was that the former (for all its negatives) ultimately became part of Indian society and contributed to it while the British systematically siphoned off all resources from India to their land to the detriment of the local populace. Millions died, Millions more were reduced to poverty with no way to build themselves up and the direct result can still be seen in today's India.

PS: Read the books and articles that i have linked to in this thread for some more info.