The English Crown, besides defining occupation and defense strategies for the new territory, also stipulated the administrative structure for the colonial territory. Measures taken to operate this structure included prohibitive laws, that is, laws designed to officialize British control over what was produced in the American colonies.
The British would make many acts, like the stamp act, to pay for French and Indian War. They did this without any say from American colonists. So basically Americans had fewer rights as they had no representation in making laws in Britain.
Americans wanted to stay out because Congress passed a series of Neutrality acts in the 1930's, which was aimed to prevent involvement in wars, and it banned the American citizens from trading with nations at war.
The creation of technology such as saddles, stirrups, and even caravans were integral in the growth of the Silk Road because it allowed more people to travel them.