Put the following events in chronological order (the first event should be the earliest, the last event should be the latest):
(6 points)
1. The signing of the Declaration of Independence
2. The assassination of President Abraham Lincoln
3. The invention of the printing press by Johannes Gutenberg
4. The signing of the Treaty of Versailles, ending World War I
5. The first manned moon landing by Apollo 11
6. The fall of the Berlin Wall.