He references what has happened in the past and implied that there will be a change for the future.
Explanation:
Lincoln referred to the old colonial days where men longed for freedom and that now the day has come. He also encourages us to understand the the world is different now that people have removed themselves from the immoral practises, this may be a reference to slavery.
He encourages the people to view themselves as heirs that have overcame the first revolution and that this new winning spirit must be passed along.
He also reassures the allies that they have that they will continue to be friends and that they will build not only America together but spread peace throughout the world.
