Answer:
They did not think they needed the federal government to defend them and disliked the prospect of having to pay tax money to support the new government. From the very beginning, the supporters of the Constitution feared that New York, Massachusetts, Pennsylvania, and Virginia would refuse to ratify it.
Explanation:
A massive topic for this could be oil. You could talk about OPEC and the different types of technologies involved
The project D. Building the Transcontinental I believe is the one that led to the creation of a system of time zones across America
"The Doctrine of Chances" is a theory that was proposed by Alfred Russell Wallace that related to the theory of natura selection of Darwinists. This doctrine is what we now consider "statistics." Wallace's idea was to use this doctrine of chances and averages in order to study population genetics.