"the rugged landscape of mountain" would be the best option from the list because not only does this make it hard to grow crops, it make it very hard for humans to harvest those crops even if they were to exist.
The answer to this question is:
"False"
becasue He did believe in God and he believed that Daniels God would save Darius from the Hungry Lion
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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.
The main reason why so many of the machines that sped up production and travel were invented during the 18th and 19th centuries is because this was the time of the Industrial Revolution, which saw a great increase in factory production, which helped create the machines in question.
