it helps citizens understand how they can influence the government. (in civics class right now ^^)
Become a member of an interest group
China's isolation by the himalayas prevented modernization and kept the ideas and technologies that were traded in europe and india out of there country. this also kept merchants and traders with goods that china could not access out of the country, however, this did decrease the chance of invasion because the mountains did provide protection. the chineese built the Great Wall completely isolating themselves and protecting there pure chinese cultures and traditions and they remained uneffected by the rest of europe.
It worked because it cut off reasources