which era in the United States history is the focus of this article the division of the South into military districts the impeachment of the president the ratification of the 14th and 15th Amendment

The federalist era
The antibeullum era
The reconstitution era
The Jacksonian era

The focus of this article is the Reconstruction era, specifically the division of the South into military districts, the impeachment of President Andrew Johnson, and the ratification of the 14th and 15th Amendments.