How were the civilizations of the Huang River valley and the Nile River valley similar? Will mark brainliest A. Both began around 4000 BCE.

B. Both arose in desert regions.

C. Both failed to develop a writing system.

D. Both were ruled by dynasties.

One of the things that allowed native americans in mexico to settle cities larger than those in areas to the north was "b. the development of cities that were built by an earlier civilizations," since mexico had been the home of some of the world's most advanced civilizations before the columbian invasion

Ayoung lady whom i'll call anonymous lived in west berlin and she said there's a thing going on there called the berlin airlift.the russians are trying to take over. this is not a good thing she says because the russians are communist and in a communist society. you don't have a say in the vovernment and you have much room to stand up for yourself.

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