If you're talking about U. S. A then 44 presidents
Answer:
By the Cold War.
Explanation:
After WWII, America and the Soviet Union knew they were BOTH international superpowers based on their success in defeating the Axis powers with nuclear weapons. Knowing this, the Soviets began expanding what I believe was south/east, and America felt threatened (somehow) to this process. So the non-violent "war" known as the Cold War (because the Soviet Union was cold and so is the USA) began.
I recommend the channel "Oversimplified" for further explanation.
(Before you ask, I do not sponsor "Oversimplified" or any channel for that matter.)
It would be an "a.effective secondary source document" that best describes a chart developed 20 years after a historical event, since the information as had time to "settle"--although of course this doesn't automatically mean that the chart is "effective".
I believe the correct answer from the choices listed above is option
D. Making a timeline of major Civil War battles is an example of
chronological thinking. It means ordering events in the specific order that they happened. Hope this answers the question.
