Decomposers break down dead material
The so-called “Toledo War” had its roots in the shortcomings of 18th century geography. In 1787, Congress drafted the Northwest Ordinance, which stipulated that 260,000 square miles of territory surrounding the Great Lakes would eventually be carved into a handful of new states. Specifically, the law decreed that the border between Ohio and Michigan was to run on “an east and west line drawn through the southerly bend or extreme of Lake Michigan” until it intersected with Lake Erie. There was just one problem: the best available maps depicted Lake Michigan’s southern tip as being several miles north of its true location. As a result, the original border placed the mouth of the Maumee River and the future city of Toledo in northern Ohio rather than in southern Michigan.
Answer:
I think it is the Kali Gandaki Gorge and it's located in Himalayas in Nepal.
I think it would be the second one- Basic tools and reliance on human and animal labor :)
