5. How was Pennsylvania significant in the production of fossil fuels?

Pennsylvania was the third-largest coal-producing state in the nation , and it was the second-largest coal exporter to foreign markets.

Pennsylvania, endowed with extensive fossil energy resources, is a leading East Coast supplier of coal, natural gas, electricity, and refined petroleum products to its own industries and to the nation.

The Appalachian Mountains in the state hold rich coal resources and run diagonally southwest to northeast through Pennsylvania, dividing the Ohio River valley in the west from the Susquehanna and Delaware River valleys in the east.

 The Marcellus Shale, the largest U.S. natural gas field, follows the arc of the mountains and underlies about three-fifths of the state.

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before there were tanks, machine guns, windmills, and solar panels, the first civilizations emerged that create the history of humanity which provided the larger context for western civilization. uses of weaponry and technology were used very differently in the ancient civilizations than they are today. relating back to the times of the ancient mesopotamian civilization, technology kept advancing throughout the ancient egyptian civilization into the ancient greek civilization, and then finally the ancient roman civilization. as techniques and strategies were past down from civilization to civilization, each shared its own similarities, as well as varied differences. one trait they had in common was to commit violence and economically overpower one another. technology has ultimately advanced due to the knowledge transferred from generation to generation. uses of sophisticated weaponry and devices have created more opportunity for warfare and improvement in the work place. ancient civilizations became more powerful due to the advancements of technology. technology did not only create the use of violence, but it also the economies grow and become stronger, because production of trading goods rose like never before. the rivers, such as the nile, tigris, and euphrates all flourished, as well as destructed civilizations. each civilization had different uses for these rivers, however, some benefited more than others. when analyzing ancient civilizations, there   are things you must understand

explanation: