One major cause of the Civil War is slavery. The Northern political party blocked the expansion of slavery which caused conflict between the North and the South
Imperial presidency term was used by Arthur M. Schlesinger,
Jr. to describe the presidency of the United States. Schlesinger wrote the book
The Presidency because of his concerns that US presidency was uncontrollable
and according to him, exceeded the constitutional limit. This book is where the
term imperial presidency became notable.
The economic impact was greatly impacted positivley
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.