Answer:
Excuse me, is that a question?
Answer:
An interesting fact is that the Egyptions purposely left no trace of evidence on how they built the pyramids. However, a study shows that the Egyptions may have used a technique where they wet the sand in front of a machine which was built to pull heavy objects, such as the heavy stones they used.
Migrants workers found job in San Joaquin Valley in California. This valley in California had a good stable climate which was good for farming. And because of route 66, they were straightly lead there from dustbowl in order to look for jobs.
President Jimmy Carter requests that the Senate postpone action on the SALT-II nuclear weapons treaty and recalls the U.S. ambassador to the Soviet Union.
Answer:
The most likely answer is the third option
Explanation:
it's not option one because you don't need surplus to be a civilization.
it's not option two because a surplus of food isn't just crops.
it's not option four because people still need to trade for other resources.
In conclusion, the most reasonable answer is option three.