A. Better machinery as industrial revolution took course between 1820- 1840
B is the right answer. All of the other options would show a decrease in the emphasis on knowledge and education.
Pandemic-the spread of disease across a wide area
Tariff-a tax on imported goods
Global warming-the gradual increase in earth’s average temperature
Answer: King of the Franks, then King of the Lombards, then Emperor of the Romans.
During the early middle ages, he united the majority of the western and central Europe. He founded the Holy Roman Empire.
Explanation: