1. What was the main cause of the American Revolution? A) The colonists' resistance to British taxation without representation B) The colonists' desire to expand westward into Native American lands C) The colonists' support for France in the Seven Years' War D) The colonists' opposition to British mercantilism and trade restrictions Answer: A 2. What was the significance of the Louisiana Purchase of 1803? A) It doubled the size of the United States and opened up new lands for exploration and settlement B) It established the Mississippi River as the western boundary of the United States and secured access to New Orleans C) It ended the French presence in North America and reduced the threat of foreign intervention D) All of the above Answer: D 3. What was the main issue that divided the North and South in the antebellum period? A) The expansion of slavery into the territories B) The tariff policy and its impact on trade C) The role of the federal government versus the states D) All of the above Answer: D 4. What was the immediate cause of the Civil War? A) The election of Abraham Lincoln as president in 1860 B) The attack on Fort Sumter by Confederate forces in 1861 C) The secession of eleven Southern states from the Union D) All of the above Answer: D