Confidence votes 278. America, referring to the United States, was officially 237 years old on July 4, 2013. If one dates from the adoption of the Constitution in 1787, the nation was 226 years old. The first explorations of the US mainland area by Europeans were by Spaniards in the early 16th Century.
Litharge is one of the natural mineral forms of lead oxide, PbO. Litharge is a secondary mineral which forms from the oxidation of galena ores. It forms as coatings and encrustations with internal tetragonal crystal structure. It is dimorphous with the orthorhombic form massicot. It forms soft, red, greasy-appearing crusts with a very high specific gravity of 9.14â9.35.
A luge /ËluËÊ/ is a small one- or two-person sled on which one sleds supine (face up) and feet-first. Steering is done by flexing the sled's runners with the calf of each leg or exerting opposite shoulder pressure to the seat. Racing sleds weigh 21â25 kg (46â55 lb) for singles and 25â30 kg (55â66 lb) for doubles. Luge is also the name of an Olympic sport. Lugers can reach speeds of 140 km per hour (87 mph).