[ 539 ] U.S. History GED ® TEST SOCIAL STUDIES FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • _____________ • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Which of the following is an opinion based on the data in the graph? a. About 40 percent of all Americans were between the ages of 25 and 54 in 1930. b. In 1950, the number of Americans under the age of 25 was roughly equal to the number of Americans between the ages of 25 and 54. c. The current trend suggests that the population of the United States is growing old too quickly. d. More than half of all Americans were under the age of 25 in 1900. Read the passage and answer the following two questions. Like so many other exploration stories, the Lewis and Clark journey was shaped by the search for navigable rivers, inspired by the quest for Edens, and driven by competition for empire. Thomas Jefferson was motivated by these aspirations when he drafted instructions for his explorers, sending them up the Missouri River in search of a passage to the Pacific. Writing to William Dunbar just a month after Lewis and Clark left Fort Mandan, Jefferson emphasized the importance of rivers in his plan for western exploration and national expansion.“We shall delineate with correctness the great arteries of this great country.” River highways could take Americans into an Eden, Jefferson’s vision of the West as the “Garden of the World.” And those same rivers might be nature’s outlines and borders for empire. “Future generations would,” so the president told his friend, “fill up the canvas we begin.” Source: Library of Congress, Exhibits, “Rivers, Edens, Empires: Lewis & Clark and the Revealing of America.” Which of the following was NOT one of Jefferson’s goals in sponsoring the Lewis and Clark expedition? a. finding a waterway to the Pacific Ocean b. mapping uncharted territory c. setting aside vast tracts of land for native people d. discovery of unspoiled plant and animal life