Which of the following did not occur when the agricultural revolution created a surplus?

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.

Why did einstein write a letter to president roosevelt

What are two things china and canada have in common