2000 metres high in places with steep rock faces and deep valleys
Mississippi River
Wide, slow and dangerous to cross along much of its length with only 4 natural bridging points
Valleys of rivers flowing into it were wooded
Berries and other wild fruits were plentiful
Great Plains
Rolling grassland
In the east the land is flat, with long prairie grass as far as the eye can see
As the land rises to the foothills of the Rockies, the grass becomes shorter
Barren landscape with few trees, little surface water
Semi desert in the south with extremes of climate (scorching sun/drought in summer but sub-zero /blizzards in winter; howling winds, tornadoes and sudden storms)
Great herds of buffalo, antelope, coyote, gophers as well as eagles and hawks
White settlers regarded the Great Plains as inhospitable and uninhabitable, and did not believe at the start of the 19th century that the land could be cultivated
Rocky Mountains
In the south the Rockies are heavily wooded and home to grizzly bears, beavers and mountain lions
Reach heights of 5 kms and are 1000 km wide
Plateaux Region
Semi desert vegetation (sage brush and cacti) and dry hostile winds
To the north lies the Columbia basin which includes the Great Salt Lake
Further south the Colorado River Plateau is an area of dramatic canyons and ravines
Sierra Nevada
Snow-capped peaks which form the backbone of the Pacific coast
Deep ravines and treacherous mountain passes which are blocked by snow in winter
Slopes are wooded and reach, in places, heights of 4500 metres
Pacific coastlands
Hospitable with a milder climate and fertile soils
Manifest Destiny
The American belief that it was their God-given right to control and rule the whole of North America
Manifest Destiny was first used by a journalist, John O'Sullivan, who wrote in the "New York Morning News" in December 1845 that "the right of our manifest destiny to overspread and possess the whole of the continent"
To many Americans, Manifest Destiny meant that as they occupied the new lands, they should bring with them the ideas of Christianity, democracy and freedom
The government in Washington was worried that unless the land was settled with loyal, hardworking Americans, other countries such as France, Britain, Mexico and Spain might try to take it back
To encourage the settlers to fulfil their Manifest Destiny, the government gave away free or cheap land to settlers and to the railroad
As Indians stood in the way of Manifest Destiny, many white settlers believed it was right that they should go to war with them