How much did it cost to build the tatara bridge?

How did Lewis and Clark get over the Rocky mountains? Is it true ocean water often has a lower salinity in warm areas than in cold areas? How much is a first edition hardbound copy of John Muir's The Yosemite worth? What is a slow moving section of a river? What countries are bordered by the mediterranean sea and Atlantic ocean with water on three sides? A russian explorer discovered a waterway that was named for him. What is the name of this waterway? Where is the Bell Aircraft Museum in Mentone Indiana located? Are bearded dragons found in the grand canyon? What is a biotic factor in a coral reef ecosystem? What was the name of the plan for governing the western lands north of the Ohio rivet? What legacy has the Grand Tour had on international tourism? What is inside Alhambra? What is the anme of the roller coaster that has the most flips? Who besides members of the armed forces can be buried at the Arlington Cemetery? What is called a person who shows people around a place for example a town or museum? When does the tree go up in 2010 at the Rockefeller centre? What is a liberty coaster wagon? What is the city where Missouri and Mississippi river meet? 34 degrees south and 151 degrees east? Why do tourist prefer package tours?