Answer:
Because the acid rain is a prime example of what could become of future Europe. Also, acid rain could also affect Europe Economically if they import resources from Germany or have trade with them. This could affect supply of products.
<span>US troops had been wounded or killed by rebels.</span>
I am 100% positive that it's <span>africa, asia, </span>Europe
D. Mayan civilization of Mexico and Central America
The correct answer is B) No historians have written about the era that preceded the ancient era.
The option that could be a reason why humans know very little about the time before the ancient era is that no historians have written about the era that preceded the ancient era.
We are referring to what is cold prehistory, the time where events occurred before the existence of written records. Historians write what they can research or interpret written records from the past such as the clay tablets of Sumer-Mesopotamia or the Egyptians glyphs due to the Rosetta Stone. But without written records, all is speculation, that is why humans know so little about prehistory.
