<span>Mercantilism was the concept that "all exploration and findings need to be routed back to the mother country for production and resale," and that "he who has the most controls the most." Monarchs at the time passed laws that required colonials to purchase their goods from companies chartered by the crown as a way of securing the profits.</span>
I think it’s the state that made the city in contract
The open door policy impacts lasted for decades and they have three major impacts; increase Chinese backlash against foreigners. Chinese and American conflict with Japan. Increased US interest in East Asia
Without the use of machinery many Americans will be employed to do various jobs. Their unemployment rate during that time will decrease. Another consideration is that there is a need for expertise in handling heavy machinery. One must be learned enough not only to drive heavy machinery but also to operate it and maintain its good condition.