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.
<span>Albert Einstein became famous for the theory of relativity, which laid the basis for the release of atomic energy. </span>
Strong military or capaitalist econmy
<span>1. a powerful and centralized government
2. the development of written language
3. simple art that depicts daily life
All the above points can be considered as the major characteristics of a true civilization.
And Organized religion, Job specialization and social class, Architecture and infrastructure are some other features of a true civilization.</span>
Answer: Article V of US constitution
Explanation: it gives states the power to call a convention of states to propose amendments. It takes 34 states to call for the convention and 38 to ratify any amendment that was proposed.
