Imperialism was just big at the time, what better than to proudly say “hey, look, we have Hawaii”. That’s all I can think of... sorry if this doesn’t help at all.
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The creation of a federal government would weaken the states and the rights of the people (America would go back to being a monarchy again) and refused to sign the constitution unless a bill of rights was secured.
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Rome became the most powerful state in the world by the first century BCE through a combination of military power, political flexibility, economic expansion, and more than a bit of good luck. This expansion changed the Mediterranean world and also changed Rome itself.
Americans were first attacked in Pearl Harbour by Japanese during WWII,leading them to join the war,the event is called Pearl Habour Incident.
Hope it helps!