You have a reading comprehension problem.
For the rest of you, the right to secede is a retained right, and exercising it expresses that right, whether it is explicitly mentioned or not.
Few knowledgeable individuals questioned the right of any state to secede until King Lincoln showed up. Check out the Hartford Convention of the mid-1810's. A good book on that crisis is by James Banner, which contains this:
"While frowning upon the extreme of secession, however, the majority of Massachusetts Federalists did not give up the search for a defense of their minority interests. This they found in the more moderate course of state interposition. The Federalist theory of interposition, so widely held after 1808, was rooted in the premise that the nation was a collection of 'several independent confederated republics,' a 'league' of equal and sovereign states which had surrendered only a portion of their authority to the central government under the Constitution. In constitutional arguments sharply reminiscent of the Virginia and Kentucky Resolutions which they had only a few years earlier rejected, Federalists declared that the Constitution was variously a 'treaty,' 'contract,' or 'association.' Each state was a free republic 'united by a solemn compact under a federal government of limited powers.' These sovereign republics, and not the people, had been represented at Philadelphia, and the nation's sovereignty derived directly from the sovereignty of the states." [James M. Banner, "To the Hartford Convention: the Federalists and the origins of party politics in Massachusetts, 1789-1815." Alfred A. Knopf, 1970, p.118]
Note carefully the last section beginning with the phrase, "Each state was a free republic...". We sometimes forget that the constitution guaranteed each state a republican form of government.
"Article IV, Section 4 - The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion;" [Law, "Constitution of the United States and Amendments." 1787]
King Lincoln must have also forgot that part.
Mr. Kalamata
You have a reading comprehension problem
I never once said that the 10th amendment was not applicable in the decisions to secede from the Union.
My statement was that it was not widely cited as a reason in the specific Secession ordnances (not at all in 11 of them) or the specific Justification documents written by 5 of the 11 secession conventions. Only South Carolina used the 10th Amendment as one of the reasons it seceded. Article 4 Section 2 clauses 2 and 3 show up more frequently in those documents as a reason than the 10th Amendment.