In lincoln's speech at the dedication of the military cemetery at gettysburg he stated that the outcome of the war would be a "new birth of "

In the  president Lincolns  speech at the  dedication  of  the  military cemetery  at Gellysburg he stated that  the  outcome of the  war would be  a  "new   birth  of freedom.  He  addressed about a  new  nation  on  this  continent  conceived in a liberty and  dedicated  to the  proposition that all men are  created equal.

February 1848 is when it was added. if that's what you were asking