How is the topic of what "America" is shaped in the Declaration of Independence, Bill of Rights, and Gettysburg Address?

In the Declaration of Independence, "America" is framed as a collective entity seeking independence from British rule, emphasizing natural rights and self-governance.The Bill of Rights defines "America" by establishing fundamental liberties and protections for its citizens, outlining the essence of American democracy and individual freedoms.In the Gettysburg Address, "America" is depicted as a nation dedicated to the principles of equality and liberty, with President Lincoln emphasizing the preservation of the Union and the ideals of democracy amidst the Civil War.