The United States entered World War II because Japan bombed Pearl Harbor, Hawaii.
After the Boston Massacre, the colonies organized the Committees of Correspondence to respond to growing disputes. This was enacted on November 4th, <span>1772.</span>
Affects it because they are joining together
The classic example of this divide is how, traditionally, history curriculums approach the Civil War.
While this is less the case today, 25-50 years ago, if you grew up in the South, you would have learned about the "War of Northern Aggression"
If you grew up in the North, you would have learned about the American Civil War and the South's history of slavery and the war to end the slavery.
"Traditional" History is often written by those that were victorious, so it is remarkable to see how in the modern era voices are being heard that would not have been traditionally heard.
A global society means that history is more nuanced with more perspectives present at the table of history.
But there is still a long way to go. Californians will spend lots of time learning about Sutters Fort while Pennsylvanians will learn about Fort Duquesne.
French philosopher Voltaire believed that if humans replaced their superstition and ignorance with rational thought of knowledge, the world would be a better place.