Why did the First Battle of Bull Run lead the Union to change its strategy?

The union realized that victory would not be as easy as it originally thought

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d.prevent the spread of communism outside of eastern europe.

pennsylvania pennsylvania colony was a proprietary colony founded when william penn was awarded a charter by king charles ii in 1681. he set up the colony as one of religious freedom. the government included a representative legislature with popularly elected officials. all taxpaying freemen could vote.

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