What was the political importance of the deceleration of independence

The Declaration of Independence had massive political importance because it united the colonies (for better or for worse) against a common enemy: the British. After the Declaration was officially made, there was no turning back for what would become the United States. 

The answer is Oliver Brown.

Explanation:

In the case that would become most famous, a plaintiff named Oliver Brown filed a class-action suit against the Board of Education of Topeka, Kansas, in 1951, after his daughter, Linda Brown, was denied entrance to Topeka's all-white elementary schools.