The first bridge constructed in 1900 over the Allegheny River at New ... Monongahela and Ohio rivers in what we now know as Pittsburgh. In 1754, the French and Indian War broke out, and in the ...

Fort Necessity National Battlefield protects the site where the French and Indian War ... Ohio Valley. The Ohio Valley is the area between the Appalachian Mountains and Mississippi, along the Ohio ...

There was only one direction to expand – over the mountains to the west into the Indian homelands and the land claimed by the French ... Ohio Valley, where clashes broke out in the summer of 1754.