paragraph_text: Großvenediger () is the main peak of the Venediger Group within the Hohe Tauern mountain range, on the border of the Austrian state of Tyrol (East Tyrol) with Salzburg. It is generally considered to be Austria's fourth highest mountain (although it can be up to sixteenth if every subsidiary summit is counted). The summit, covered by glaciers, is part of the Hohe Tauern National Park.

paragraph_text: Mount Fernow is a tall peak in the North Cascades in the U.S. state of Washington and within the Glacier Peak Wilderness of the Wenatchee National Forest. At in elevation it is the eighth-highest peak in Washington and the state's third-highest non-volcanic peak. It is also the highest peak of the Entiat Mountains, a sub-range of the Cascades. Mount Fernow's prominence is , making it the sixtieth-most-prominent peak in Washington. The nearest higher peak is Bonanza Peak, to the north.

paragraph_text: Garfield Peak is a high mountain summit of the Collegiate Peaks in the Sawatch Range of the Rocky Mountains of North America. The thirteener is located south-southwest (bearing 197°) of Independence Pass, Colorado, United States, on the Continental Divide separating San Isabel National Forest and Chaffee County from White River National Forest and Pitkin County. Garfield Peak was named in honor of James A. Garfield, 20th President of the United States.

paragraph_text: Mummy Mountain is the second highest peak of the Spring Mountains in Clark County, Nevada, United States. It is the twentieth highest mountain in the state. The mountain is located within the Mount Charleston Wilderness and the Humboldt-Toiyabe National Forest.

paragraph_text: Dickey Peak () is a rocky peak rising to 1504 m in the northwestern part of the Flowers Hills in the Sentinel Range of the Ellsworth Mountains in Antarctica. It overlooks Dater Glacier to the west and Lardeya Ice Piedmont to the east. The feature was first mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1957–59, and was named by the Advisory Committee on Antarctic Names for Clifford R. Dickey, Jr., an electronics technician at the South Pole Station in 1957.

paragraph_text: The Roberts Mountains are located in central Nevada in the western United States. The mountains are found in Eureka County, east of the Simpson Park Mountains and west and southwest of the Sulphur Spring Range. The range reaches a peak at Roberts Creek Mountain at . Nevada State Route 278 passes the east margin of the range in Garden Valley and continues on about southeast to Eureka.

paragraph_text: East Sister is the highest independent mountain completely within Lyon County in Nevada, United States. It is located within the Sweetwater Mountains just a short distance north of the highest point in Lyon County on the northeast ridge of Middle Sister. The peak is within the Humboldt-Toiyabe National Forest.

paragraph_text: The Great Plains come to an abrupt end at the Rocky Mountains. The Rocky Mountains form a large portion of the Western U.S., entering from Canada and stretching nearly to Mexico. The Rocky Mountain region is the highest region of the United States by average elevation. The Rocky Mountains generally contain fairly mild slopes and wider peaks compared to some of the other great mountain ranges, with a few exceptions (such as the Teton Mountains in Wyoming and the Sawatch Range in Colorado). The highest peaks of the Rockies are found in Colorado, the tallest peak being Mount Elbert at 14,440 ft (4,400 m). The Rocky Mountains contain some of the most spectacular, and well known scenery in the world. In addition, instead of being one generally continuous and solid mountain range, it is broken up into a number of smaller, intermittent mountain ranges, forming a large series of basins and valleys.

paragraph_text: The United States Congress passed an enabling act on March 3, 1875, specifying the requirements for the Territory of Colorado to become a state. On August 1, 1876 (28 days after the Centennial of the United States), U.S. President Ulysses S. Grant signed a proclamation admitting the state of Colorado to the Union as the 38th state and earning it the moniker ``Centennial State ''. The borders of the new state coincided with the borders established for the Colorado Territory.

paragraph_text: East of the divide, several roughly parallel ranges cover the southern part of the state, including the Gravelly Range, the Madison Range, Gallatin Range, Absaroka Mountains and the Beartooth Mountains. The Beartooth Plateau is the largest continuous land mass over 10,000 feet (3,000 m) high in the continental United States. It contains the highest point in the state, Granite Peak, 12,799 feet (3,901 m) high. North of these ranges are the Big Belt Mountains, Bridger Mountains, Tobacco Roots, and several island ranges, including the Crazy Mountains and Little Belt Mountains.

paragraph_text: Little Bear Peak is a high mountain summit in the Sangre de Cristo Range of the Rocky Mountains of North America. The fourteener is located on the Sierra Blanca Massif, north by east (bearing 6°) of the Town of Blanca, Colorado, United States, on the drainage divide separating Rio Grande National Forest and Alamosa County from the Sangre de Cristo Land Grant and Costilla County. Little Bear lies southwest of Blanca Peak, the ultra prominent fourteener that is the highest point of the massif.

paragraph_text: Rocky Mountain is a census-designated place (CDP) in Adair County, Oklahoma, United States. The population was 420 at the 2010 census.

paragraph_text: Stewart Peak, elevation , is a summit in Colorado. The peak is the second highest thirteener (a peak between 13,000 and 13,999 feet in elevation) in the state. It is located in the La Garita Mountains, sub-range of the San Juan Mountains, in Saguache County, within the La Garita Wilderness. Stewart Peak is the 55th highest peak in Colorado by most standard definitions, just missing the list of Colorado fourteeners. At one time, the peak's elevation was measured to be over 14,000 ft and it was believed to be a fourteener, but more recent and accurate surveys have dropped it below that threshold.

paragraph_text: Catawissa Mountain is a mountain in Columbia County, Pennsylvania, in the United States. Its peak height is above sea level, making it the fifth-highest mountain in Columbia County. Streams that flow near the mountain include Roaring Creek, Catawissa Creek, and some of its tributaries. The mountain is near Nescopeck Mountain and Little Mountain. Sandstones and rock formations such as the Pocono Formation occur on Catawissa Mountain.

paragraph_text: Granite Peak is the highest mountain in both the Santa Rosa Range and Humboldt County, in Nevada, United States. It is the eighteenth-most topographically prominent peak in the state. The peak is located within the Santa Rosa Ranger District of the Humboldt-Toiyabe National Forest, about 12 miles north of the small town of Paradise Valley and 23 miles southeast of the small town of McDermitt. It is the highest mountain for over 80 miles in all directions.

paragraph_text: Mount Shasta (Karuk: Úytaahkoo or ``White Mountain '') is a potentially active volcano at the southern end of the Cascade Range in Siskiyou County, California. At an elevation of 14,179 feet (4321.8 m), it is the second - highest peak in the Cascades and the fifth - highest in the state. Mount Shasta has an estimated volume of 85 cubic miles (350 km), which makes it the most voluminous stratovolcano in the Cascade Volcanic Arc. The mountain and surrounding area are part of the Shasta -- Trinity National Forest.

paragraph_text: Roof Butte ( "Roof shaped mountain on the run") is a peak in the Chuska Mountains in Arizona, United States. Roof Butte is the highest peak of the Chuska Mountains which run in a north-northwest direction across the Arizona-New Mexico border. Roof Butte is a visible butte for miles around. The butte has an elevation of . A manned-lookout tower is located on Roof Butte. Two funnel shaped explosion volcanic pipes formed the flattish summit of Roof Butte, and a low lava dome caps one nearby peak.

paragraph_text: The Sawtooth Range is a mountain range of the Rocky Mountains in central Idaho, United States, reaching a maximum elevation of at the summit of Thompson Peak. It encompass an area of spanning parts of Custer, Boise, Blaine, and Elmore counties, and is bordered to the east by the Sawtooth Valley. Much of the mountain range is within the Sawtooth Wilderness, part of the Sawtooth National Recreation Area and Sawtooth National Forest.

paragraph_text: Columbia Point is a high mountain summit of the Crestones in the Sangre de Cristo Range of the Rocky Mountains of North America. The thirteener is located east by south (bearing 102°) of the Town of Crestone in Saguache County, Colorado, United States. The Crestones are a cluster of high summits in the Sangre de Cristo Range, comprising Crestone Peak, Crestone Needle, Kit Carson Peak, Challenger Point, Humboldt Peak, and Columbia Point.

paragraph_text: Mount Bendeleben is the highest peak in the Bendeleben Mountains of the Seward Peninsula in Nome Census Area, Alaska, United States. It is located on the western end of the range, southwest of Imuruk Lake.

Question: When did the state where the highest peaks of the Rocky Mountains are found become part of the U.S.?
Answer: August 1, 1876