Answer :
To match each event with the correct year:
1. President Kennedy assassinated - 1963
2. Four students shot during anti-Vietnam War protest at Kent State University - 1970
3. Neil Armstrong is the first human to step on the moon - 1969
4. Elvis makes first appearance on Ed Sullivan's TV show - 1956
5. Lawyer Joseph Welch shows up Senator Joseph McCarthy on national television during Army-McCarthy hearings - 1954
6. Marxist Sandanista faction overthrows Samoza regime in Nicaragua - 1979
By associating each event with the correct year, you can create a timeline of significant historical moments. This exercise helps in understanding the sequence of events and their historical context.