Answer:
some empires inveneted things that we dont no about that could be useful
Explanation
when the roman empire fell medical books where burnt and thoose medicines could be still uncovered by us. so by studying them we might be able to discover inventions and discoveries that they made.
The answer to this question is a. hope this helps!
Answer:
Second Great Awakening, Protestant religious revival in the United States from about 1795 to 1835. Many churches experienced a great increase in membership
Explanation: