One cause was the sheer size of the Mongol empire, due to its size the generals and grandsons of Genghis Khan (the most known Mongol warlord of all time) could not hold it together.
Another cause was that an empire of this size needed more and more administration which was not being done to the level it needed to be, and this eventually led to the decline as well.
Before people relied on their own skills of hunting/gathering to survive, now people developed tools and methods to utilize nature to provide what they needs (such as breeding plants by their own or taking water source from a far region)
<span>before it was always moving to where animals were to hunt or plants now one could settle anywhere if they know methods to farm and breed and started to transform that place into food producing space on their own</span>
"As a result of some former Confederate states' refusal to ratify the Fourteenth Amendment,"
Possible answer = Congress established military rule in the South.
Answer:
in the end, even though the American effort to block a communist takeover failed, and North Vietnamese forces marched into Saigon in 1975, communism did not spread throughout the rest of Southeast Asia.
Explanation:
Answer:
D. 4.5 billion years
Explanation:
Scientists study meteorites to determine the age of our solar system, since they are the oldest accessible material out there. Earth itself has rocks that are over 4 billion years old.
In recent times, meteorites have informed our view of, and our priorities about, what spacecraft – and perhaps, one day, human explorers – might find on Mars and other planets. And we now recognize that a cosmic delivery of life with an independent origin from our own would revolutionize our ideas about the extent of life throughout the whole known Universe.
