How did the scientific revolution change the way scientists proved their ideas?

Why did leaders such as siddhartha gautama abandon hinduism to createbuddhism around 500 bce:

The american public did not truly take in the horror of adolf hitler's regime until years after the existence of concentration camps was first reported in american newspapers. partly this was the fault of the media, which did not give prominent placement to news of the holocaust. what other factors do you think contributed to the long delay in understanding the holocaust?

What area is it likely to have the most population