The primary purpose of the hawley smoot tariff of 1930 was to heavily restrict imports to the United States, making it easier for people to find jobs domestically. It was seen as a huge failure, however.
Traversing as they do all of Eurasia, the Silk Roads encompassed almost every climate and vegetation zone and crossed every kind of terrain. This sketch of Silk Road geography has the modest aim of introducing a few of the important features of Eurasian physical geography which help us to understand patterns of human habitation and interaction across that vast expanse. There are always regional variations which deserve more detailed treatment. Before the advent of modern technology, geography and ecological zones were critical determinants of where and how people lived, moved and interacted. Boundaries such as we know them, delineated by modern states, did not exist, but boundaries there were, either natural or manmade, and in both cases they turn out to have been quite permeable.
The correct answer is knowing the ways that humans use Earth's natural resources.
The ancient settlers of the Andean region, at the foot of the Andes Mountains developed extraordinary irrigation and cultivation systems on the hillsides. The crops were deployed in the form of steps on the hillside making productive all the resources provided by nature and adding technology for its efficient and effective use.
The current farmers use some of the techniques and customs inherited from the original peoples and add the most modern technologies to further increase the productivity of the lands and contribute positively to the economy of their regions.
It is a common feature in the diverse cultures of humanity to adapt to the geographical characteristics of the region where they live solving the difficulties through ingenuity and hard work.
The answer is B, business rights