Metallurgy

India was the world leader in Metallurgy for more than years. Gold jewellery is available. Brass and bronze pieces are dated back. Extraction of zinc from ore by distillation was used in India as early as BCE while European William Campion patented the process some years later. Copper statues can be dated back to CE. There is an iron pillar in Delhi dating back to CE that shows no sign of rust or decay. There are two unique aspects to Indias ancient scientists.
First their discoveries are in use today as some of the most important aspects of their field and are validated by modern technological machines. Second, their discoveries brought peace and prosperity rather than the harm and destruction of many of our modern discoveries. Due to their intense spiritual life, they developed such power of discrimination vivek. Spirituality gives helpful direction and science brings speed. With a core of spirituality, modern scientists discoveries can quickly bring only helpful ideas to help humanity. While Einstein is credited with the idea that one can travel faster than the speed of light, it was written about centuries before in the ancient Vedic literature.
Perhaps it was Einsteins association with the famed Indian physicist, Bose that led to his introduction to the views about the speed of light. Through deep meditation and reading the ancient Vedic texts, who knows what our modern day scientists will discover. There are two points here, the first is that India should be proud of its amazing achievements and be properly credited, and second is that India leaves a blueprint, compass and map for how to develop safe and helpful discoveries for the future betterment of mankind.