A zeppelin is a type of rigid airship that was particularly popular in the early 20th century. Zeppelins were originally flown commercially. However, during World War I, Germany began to employ zeppelins for military purposes. These were particularly convenient during the war, as they were difficult for the enemy to shoot down.
"<span>D. He would allow slavery to continue in the South to prevent a war" is the correct answer, since Lincoln's main objective was preserving the Union. He greatly disliked slavery, however.</span>