Answer:
Historians label an event as a turning point when it marks the beginning of a distant historical period.
Step-by-step explanation:
In history, turning points are those events that mark a sharp change in the order of the events of a given process. That is, they are moments that change the established order, and are great causes of the subsequent end of the historical process in which they are immersed.
A clear example of turning point is the attack on Pearl Harbor, which meant the entry of the United States into World War II, which ultimately meant the defeat of the Axis in 1945.