In no way is the United States monolithic in terms of geography, culture and demography. The immense territory of contrasting relief and climates is home to a diverse population whose lifestyle varies according to region and socio-economic level. Here, the vast spaces go hand in hand with a geographic and demographic diversity that cannot be described with simple clichés: indeed, the frenetic pace of the great cities, the deserts, the forests, the great plains, the geysers, the canyons, the mountains and the oceans have blended together to create a magnificent land of contrasts and have deeply influenced the population, economic development, lifestyle and culture of this country.