The correct answer is they blazed trails through the Rocky Mountains and other difficult terrain.
Mountain men were people who lived in the wild of Rocky Mountains from 1810 to 1880. These men played an important role in <em>creating roads</em> so people from the East could travel to the West, helping the fur companies improve their trade. Many mountain men worked as a <em>“free trappers”</em>(by their own), but a lot of them were hired by fur companies.
Go back to North America. Give the colonists some representation in Parliament and a little more ‘freedom’ to rule and re-write laws and economic policies (taxes). This would have appeased some of the revolutionary leaders and most of the common people. This may have led to a diplomatic, not militaristic, resolution to the grievances of the colonies that were eventually written in the Dec. of Indep.
Gorilla warfare was one of the tactics. The colonist knew the areas better then the British soldiers did so it was easy to hide in tree lines and attack the unsuspecting soldiers.
By looking at the 1849 poem, one reason that London's drinking water was polluted was because the Thames River was polluted. The river was polluted because it was filled with sewer, factory waste, and sink waste. Officials were paid off to ignore all of the pollution being dumped into the Thames River.