Polk new the importance of settleing in the west which is why he came up with the theory of Manifest Destiny. The significance of Manifest Destiny was due to the growth in population and people needed more land and resources. The western land was prosperous and would help the United States economically.
The American Civil War ended in 1865 and gold had been discovered in California in 1848. You do the math. People were flocking to California from all over the world, and some Americans did not want to miss out on all that excitement - riches, glory, and the resultant (questionable) honor.
the low price and easy availability of land
Abolitionists
In the American west.
The government continued to pass laws to encourage people to settle the West, while the railroads made transportation from the east to the west faster and more convenient.
they wished to settle west
Moved west toward california
British colonists wishing to settle west of the Appalachians were motivated by their ability to trade. This capability allowed them to meet the necessary needs for survival.
Japanese immigrants did not settle in large number in the West after the Civil War.
the low price and easy availability of land
northwest
the low price and easy availability of land
It's the shore they landed on.
Abolitionists
By putting colored people there!
The Dutch West India Company
People wanted to go west and settle there. Some went west to get rich, by usually finding gold.
Settling next to rivers gave them water for crops, drinking, etc.