Which is the correct chronological order to illustrate a cause-and-effect relationship among the following events leading to the Civil War?
1) Missouri Compromise, Compromise of 1850, Kansas-Nebraska Act
2) Compromise of 1850, Kansas-Nebraska Act, Missouri Compromise
3) Kansas-Nebraska Act, Missouri Compromise, Compromise of 1850
4) Missouri Compromise, Kansas-Nebraska Act, Compromise of 1850