Why did people criticize the french nobility, the king louis xvi and the clergy?

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

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.

How do you believe the japanese justified their imperialism in korea taiwan and china