Answer;
-The Tet Offensive
Explanation;
The Tet offensive is the event that marked the turning point in the Vietnam conflict, forcing Lyndon Johnson to change course and pull out of the upcoming presidential race.
-The Tet offensive was a major invasion of South Vietnamese urban centers, that was launched by the North Vietnam in 1968.
-The Tet Offensive played an important role in weakening U.S. public support for the war in Vietnam. The goal of the offensive was to severely damage the United States and South Vietnamese forces as well as encourage an uprising against the government of South Vietnam.
One very famous, perhaps the most famous way was through improvised vaccination. Specifically, George Washington ordered his healthy men to be injected with substance taken from the wounds of the sick men during a smallpox infection.
A risk was that those men would get sick just like the the sick men did, but the the potential reward would be that they would get sick in a controlled way and that they would be able to fight this disease.
Answer:
In the 1330s, many natural disasters and plagues led to widespread famine, starting in 1331, with a deadly plague arriving soon after. Epidemics that may have included the plague killed an estimated 25 million Chinese and other Asians during the fifteen years before it reached Constantinople in 1347.
Answer: Germany's Checks and balance system got taken down by Hitler. Hitler started to pass on laws about the Jews and sent troops to search and put them in concentration camps
Explanation: I hope this helps <3
