One of the most determining factor is demand for foreign luxury goods increased in Afro-Eurasia. Due to this demand, many of the nobilities started to collected goods from Asia because it seem exotic for the collection. Their textile also require silk which could be easily found in chinese, persia, and indian regions which contributed to an increase in demand for textiles.
Yes kail muscle is alive, you can watch videos of him
Technology made manufacturing more efficient
1 . Is it was a disaster and kill lots of people 2. Yamada was the city 3. Thing were everywhere people were scatter , buildings were destroyed and Business was destroyed 4. To tell them is was war or payback