Actually, on the point of terrain, at the time of the battle Gettysburg was actually only sparsely wooded. In the century+ since the battle, they've allowed the woods to grow up and take over. Now, though, they've been chopping down the forest to return the battlefield to its state at the time of the actual fighting and have been tearing down the ugly eyesore buildings that... were eyesores. I actually did not recognize Devil's Den or the wheatfield when I went back last summer, it's changed so much.

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"When in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation... We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness...."
- The Declaration of Independence