Answer:
Decline in trade - shift to a rural society
Explanation:
The fall of the Roman Empire brought significant changes in the mode of rule and governance. After the fall, the empire was governed by the warrior kings. The traditional and community guidelines were given priority than the written laws. There was a drastic change in the economic stability of the empire as well. The economy inclined towards the agricultural sector as the result of the collapse of the trade. It was because of the decline in the trade that shifted the empire towards the rural society.
It benefited in numerous ways but mainly it and maybe most importantly it gave them the access to the China trade. The Pacific route was also Spain's exclusively for a certain period of time and there was also a great need for silver in China which was supplied by the Spaniards from their silver mines.
Answer:
vaccination
Explanation:
Louis Pasteur had been working to find a vaccine that would cure cholera in chickens. His lab assistant gave an older, weaker strain of the disease to the birds. When these birds did not die Pasteur began to rethink his ideas a came up with our current method of administering vaccinations.