•economic and social changes in the united states: how had the nation changed since 1800?

answer:

to u.s. global leadership in natural gas and oil production, petroleum imports (crude oil and refined products) are at their lowest level since the 1960s. americans can look to the future from a position of energy strength – more self-sufficient, energy secure and able to provide leadership around the world, friends and deterring adversaries.

explanation:

which empire had the greatest influence on the history and cultural development of russia?

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.