- Geography: California is the 3rd largest state in the United States in area, after Alaska and Texas.In the middle of the state lies the California Central Valley, bounded by the coastal mountain rangesin the west, the Sierra Nevada to the east, the Cascade Range in the north and the Tehachapi Mountains in the south. The Central Valley is California's agricultural heartland.Divided in two by the Sacramento-San Joaquin River Delta, the northern portion, the Sacramento Valley serves as the watershed of the Sacramento River, while the southern portion, the San Joaquin Valley is the watershed for the San Joaquin River.
- Natural Wildlife: California boasts several superlatives in its collection of flora: the largest trees, the tallest trees, and the oldest trees. California's native grasses are perennial plants.After European contact, these were generally replaced by invasive species of European annual grasses; and, in modern times, California's hills turn a characteristic golden-brown in summer. California has the greatest diversity of climate and terrain, the state has six life zones which are the lower Sonoran (desert); upper Sonoran (foothill regions and some coastal lands), transition (coastal areas and moist northeastern counties); and the Canadian, Hudsonian, and Arctic Zones, comprising the state's highest elevations.

- Important Cities:

Nevada was annexed as a part of the Spanish Empire in the northwestern territory of New Spain. Administratively, the area of Nevada was part of the Commandancy General of the Provincias Internas in the Viceroyalty of New Spain. Nevada became a part of Alta California (Upper California) province in 1804 when the Californias were split. The discovery of the first major U.S. deposit of silver ore in Comstock Lode under Virginia City, Nevada in 1859.

- Geography: Nevada is almost entirely within the Basin and Range Province, and is broken up by many north-south mountain ranges. Most of these ranges have endorheic valleys between them, which belies the image portrayed by the term Great Basin. Much of the northern part of the state is within the Great Basin, a mild desert that experiences hot temperatures in the summer and cold temperatures in the winter. The Humboldt River crosses the state from east to west across the northern part of the state, draining into the Humboldt Sink nearLovelock.

- Natural Wildlife:

Nevada is the driest state in the United States.It is made up of mostly desert and semiarid climate regions, daytime summer temperatures sometimes may rise as high as 125 °F (52 °C) and nighttime winter temperatures may reach as low as −50 °F (−46 °C). While winters in northern Nevada are long and fairly cold, the winter season in the southern part of the state tends to be of short duration and mild. Most parts of Nevada receive scarce precipitation during the year. Most rain that falls in the state falls on the lee side (east and northeast slopes) of the Sierra Nevada. The vegetation of Nevada is diverse and differs by state area. Nevada contains six biotic zones.

- Important cities: Las Vegas Henderson Reno Paradise North Las Vegas Sunrise Manor Spring Valley Enterprise Sparks Carson City

- Remarkable aspects:

Atomic Energy Commission: designation area 51

- Geography: Colorado is notable for it's diverse geography, ranging from alpine mountains, arid plains and deserts with huge sand dunes, deep canyons, sandstone and granite rock formations, rivers, lakes, and lush forests.

- Natural widlife: The climate of Colorado is more complex than states outside of the Mountain States region. Unlike most other states, southern Colorado is not always warmer than northern Colorado. Most of Colorado is made up of mountains, foothills, high plains, and desert lands. Mountains and surrounding valleys greatly affect local climate.

- Important cities:

Denver Colorado Springs Aurora Lakewood Fort Collins Westminster Thornton Arvada Pueblo Centennial Boulder

- Remarckable aspects: Colorado is home to four national parks, eight national monuments, two national recreation areas, two national historic sites, three national historic trails, one national scenic trail, 11 national forests, two national grasslands, 42 national wilderness areas, two national conservation areas, eight national wildlife refuges, 44 state parks, 307 state wildlife areas, and numerous other scenic, historic, and recreational areas.

- Fact files:

New York endorsed the Declaration of Independence on July 9, 1776.[27] The New York State constitution was framed by a convention which assembled at White Plains on July 10, 1776.

-Geography: New York covers 54,555 square miles (141,300 km2) and ranks as the 27th largest state by size. The Great Appalachian Valley dominates eastern New York and contains the Lake Champlain Valley as its northern half and the Hudson Valley as its southern half within the state.

-Natural widlife: In general, New York has a humid continental climate The winters are long and cold in the Plateau Divisions of the state. In the majority of winter seasons, a temperature of −13 °F The summer climate is cool.

-Important cities: New York City Buffalo Rochester Yonkers Syracuse Albany New Rochelle Mount Vernon Schenectady Utica

-Remarckable aspects: -New York was called New Amsterdam outset and was founded as a commercial port by the Dutch. -New York was the capital of the United States from 1789-1790. -Around 50 million tourists visit New York each year. -There are over 18,600 restaurants and fast food establishments in New York. -Hong Kong is the only city with more skyscrapers built to New York City. Fact files: