Because at the time the nation needed a strong centralized government and in order to do so they needed to create 5 different departments
1: The Santa Maria
2: The pinta
3: The nina
I think that the answer is B. It was spread along the Silk Road during the Han Dynasty.
A i believe Hope this helps
External criticism so important when it comes to analyzing data because it's easy to develop a bias when overlooking data even if you don't realize it. When scientists become invested in their projects they can block out conclusions that may prove them wrong.
