Did Reconstruction extend or undermine democracy in the United States?

The Reconstruction era redefined U.S. citizenship and expanded the franchise, changed the relationship between the federal government and the governments of the states, and highlighted the differences between political and economic democracy

Reconstruction (1865-1877) is the period of time following the American Civil War (1861-1865) when some politicians and citizens sought to reunify the nation, integrate freed slaves into society and the economy, establish political and economic rights for all African Americans, and determine what role the U.S. ...

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