Why was global trade restricted in ming china during the 15th to 18th centuries?

Which of the following most accurately describes china today

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.

The council of trent decided priest would go through strict training i'm schooling called