Answer:
What happened in 1968 Major News Stories include Dr. Christian Barnard performs the first successful heart transplant, Assassination of Martin Luther King Jr. , The first Big Mac goes on sale in McDonalds costing 49 cents, Boeing 747 made its maiden flight, Emergency 911 Telephone service is started in the USA, Hong Kong Flu pandemic, The Poor People's March on Washington, D.C, Vietnam US soldiers massacre men, women and children in My lai, Prague Spring in Czechoslovakia