Answer:
Gorbachev's decision to allow elections with a multi-party system and create a presidency for the Soviet Union began a slow process of democratization that eventually destabilized Communist control and contributed to the collapse of the Soviet Union.
Serving in the Russian Civil War before overseeing the Soviet Union's establishment in 1922, Stalin assumed leadership over the country following Lenin's 1924 death. Under Stalin, socialism in one country became a central tenet of the party's dogma.
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.
Egyptians are known for making a lot of advances in learning.
The two big ones are :
Paper
Hieroglyphs
Egypt is also known for various other things such as ...
The place of the first surgery.
The first place to incorporate plants, animal parts, and minerals into medicine.
Where the first physician lived.
There are many more advances in learning and great discoveries Egypt made, but the ones I listed only make up a few! If you'd like to learn more, I suggest looking it up.
Hope this helps! :)
<span />
Try to check google or something
