Prior to the conflict between Britain and its North American colonies, the colonies were able to manage majority of its own affairs without Britain's interference. However, when Britain started implementing stricter measures on their colonies' trade and other affairs, the colonies didn't like it. This started the tension between both parties.
Something directly associated to better transport lines: increased settlements in the West
In the face of all these events of the century, the United States remained intelligent, providing weapons in the war, another making allies to remain victorious. Among all these moments in history, the United States remained one step ahead in strategic terms, of what could happen next and how to make the error something that could benefit it. In this sense, I believe that all events have made the United States become a world power through strategic acts.
Blitzkrieg. It was a huge strategy that involved air attacks, tanks etc.
