What is the name given to an s-shaped bend in the river

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 has the caste system canged in indea and pacistane

What spurred american trade with northern mexico?