The answer is bantu
hope this helps
Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy.
The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. <span />
The correct answer in my opinion would be that D is the most important factor here. But this question is quite tricky.
We can surely say for example that literature, organized schools and a hierarchy of priests are not something that constitute a civilization. Organized schools appeared to late, not every civilization had literature and having only a hierachy of priests is not enough to say you have a civilizaton.
Labor has been divided in pre-civilization hunter-gatherer societies as well.
For that reason I'd say the correct answer is D - more food than is needed for survival. Having this, the people in a certain group can focus on other things.
Answer:
The Battle of Gettysburg, fought from July 1 to July 3, 1863, is considered the most important engagement of the American Civil War. On July 3, 1863, Union troops repelled a massive artillery assault on Cemetery Ridge during the third day of the Battle of Gettysburg in southern Pennsylvania. ... As a consequence, Confederate General Robert E. Lee was forced to retreat and ultimately abandon his attempt to reach Washington, D.C. via Pennsylvania.
Explanation:
