Which South American country is about 2,650 miles long but averages less than 110 miles wide?

Which underwear brand's name was trademarked in 1871, making it one of the oldest U.S. trademarks? Which country gained independence from South Africa in 1990, though South Africa kept the port of Walvis Bay until 1994? Which ancient Roman arena could hold around 50,000 spectators? Which singer wanted to play himself in a 1946 film biography but was too old, so Larry Parks got the role? The Altiplano, Spanish for "high plain," is a plateau about 12,000 feet up in which South American mountains? Which group of aluminum silicate minerals is the most abundant in Earth's crust? Alvaro Uribe became president of which South American country in 2002, vowing to get tough on rebels and drug trafficke… Alvin York and Eddie Rickenbacker both received which French military decoration, first awarded in 1915?