How did Greece geography cause city states to develop unique culture?

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

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.

What two advances did europeans borrowed from china