The Thirteenth Amendment was ratified by twenty-seven States of the then thirty-six States of the Union, including the Southern States of Virginia, Louisiana, Arkansas, South Carolina, North Carolina, Alabama, and Georgia.
There can be no doubt but that the ratification by these seven Southern States of the Thirteenth Amendment again established the fact that their Legislatures and State governments were duly and lawfully constituted and functioning as such under their State constitutions.
For the federal government to declare that they were no longer states in the union (which is what the wanted all along), to accept one Amendment vote and reject another, then to institute military governments because the NORTH again refused to abide by the terms of the Constitution speaks volumes about those that accept the legality of their actions, prior to and after their illegal invasion of the South.
Just to clear things up, did their representatives and senators in Congress also have the opportunity to cast their votes on whether or not to propose the amendments in the first place?