What does it means when gilamesh says a name i will establish?

This was the name of a Sumerian hero who was involved in several adventures with his friend Enkidu. Gilgamesh was probably based on a real person – a king of Erech who ruled around 2700 BC. Statistics Of The Name Gilgamesh

Explanation:

in this part of the declaration it refers to the point when american people didn't recognize the british domain and   breaks the political bands with britain, they forced a respectful separation.

mankind was created and entitled equally with rights   which were life, freedom and the seeking for happiness.