Islamic civilization has nothing to do with militant islam. Most of the Islamic scholars were the sufi-saints, ahemedias, etc. Not the kind of Osama Bin Laden!
Btw through other countries had numbering system, the decimal system was unique to India.
The period of Chandra Gupta Maurya is called the "Golden Period" of Indian History and that pre-dates even Christianity. There is no political treatise equivalent to Chanakya's Artha Sasthra anywhere in the world.
Why do the muslims and christians get offended when it is a historical fact that the Indian sub-continent had a civilized life when most of the other continents were still in the stone age? You people also have equal rights for the culture and civilization of India. So don't get offended.