What is a recurring event in the development of the US?

First opera house built in US? When did the Asia roman province begin? Did Japan's bombing of Pearl Harbor cause President Franklin D. Roosevelt to announce that the US had declared war on Japan.? How did the ancient Egyptians clean their drinking water? Are there any deadly animals in Portugal? What is the treaty that followed Miami Indian's defeat in the battle of fallen timbers that ceded Ohio to the us but gave Indians limited sovereignty? What language did Thomas Paine have to learn in 1774? What large body of water was in the middle of the area controlled by the roman empire? What Founding fathers were descended from Jamestown settlers? When did nicolaus Copernicus' father die? Why did Lincoln wait for the NOrthern victory to announce the Wmancipation proclamation? How did city walls and acropolises affect Greek city-states? Who did Cassius blame for his bad disposition? To which species does the insect belong? The joint doctrine development process had four step? Cest-a-dire que vous êtes en train de faire votre cours? Are there any threats because of the great wall of china? Did roman generals use oracles? Will darlie routier ever be executed? What are Gospels in Christianity and why are they so significant?