the guy who put this poll up has managed to completely overlook one of the best ancient civilisations in the world - the Indian civilisation.
Haa, teek bolo Bhai!

Indian civilization is often easily overlooked, which is really sad. It is the oldest civilization in the world, older than Egypt, older than Sumer. It has seen the rise and fall of other civilizations like Greece, even China is not as old, though more continuous. Indian influence spread from Japan to Cambodia to Rome. Most of the ancient mathematical and scientific achievements came from India... concepts of both zero and infinity, decimals, algebra, trig, calculus, metallurgy, chemistry, just to name a few. Four of the world's religions come from India - Hinduism, Buddhism, Jainism, and Sikhism.
The world's oldest university was in India. It was Takshila in 700 BC. More than 10,500 students from all over the world studied more than 60 subjects. The campus accommodated 10,500 students who came from as far as Babylonia, Greece, Syria, Arabia, and China and offered over sixty different courses in various fields, such as science, mathematics, medicine, politics, warfare, astrology, astronomy, music, religion, and philosophy.
For most of the world's history, India was the richest, most powerful nation in the world. Just about every scientific discovery made by the Greeks or the Chinese was made before by the Indians. Militarily, India was one of the first nations to use tactics, divisions, and formations. Even martial arts came from India and entered the rest of Asia through Buddhism.
This site has a lot more info:
www.atributetohinduism.com