Answer:
<em>Lincoln means that, since he considered the constitution and the law of United States of America to be superior above any state, then, to his ability, he would defend the constitution upon which the country is binded (that is, unify the States together).</em>
<em>This is to ensure that America was never disintegrated into smaller countries.</em>
Explanation:
End of the Great Depression. Franklin Roosevelt wanted to end the depression with the New Deal, because of WWII, industries boomed. (Hope this was it)
The Declaration of Independence was signed 87 years before 1863. Lincoln began his eulogy with a reference to this event as a reminder that the
Civil War soldiers were fighting and dying for freedom.