Compare the U.S. Union's response to secession in 1860–61 with the safeguards against secession in the Indian Constitution.

The U.S. Constitution of 1787 did not say whether a state could leave the Union. Secession in 1860–61 was therefore settled first by war and only later in court. India's framers wrote after Partition and settled the question in the text itself, creating an "indestructible Union of destructible States".

U.S. Response (1860–61): Reactive and Coercive

• Constitutional silence: Deep South states, led by South Carolina, seceded after Lincoln's election. They treated the Union as a compact that states could revoke.
• Military force: after Fort Sumter fell, Lincoln called for 75,000 militiamen on 15 April 1861. The South saw this as coercion, and four more slave states seceded: Virginia, Arkansas, Tennessee and North Carolina [1].
• Court ruling only after the war: in Texas v. White (1869) the Supreme Court held that the Constitution "looks to an indestructible Union, composed of indestructible States", so secession was void [2].

Indian Safeguards: Preventive and Layered

• Textual: Article 1 calls India a "Union of States", and no provision allows a state to leave [3].
• Power of Parliament: under Article 3, Parliament can redraw state boundaries. The state legislature's views do not bind it [3].
• Limits on rights: the 16th Amendment (1963) made "sovereignty and integrity of India" a ground for restricting speech, assembly and association under Article 19(2)–(4). It also added these words to the Third Schedule oaths [3].
• Statutory: under the UAPA, 1967, any act or words supporting a claim to secession count as an "unlawful activity" (s. 2(o)) [4].
• Emergency powers: Articles 352 and 355–356 let the Union act against armed rebellion or a breakdown of constitutional government in a state [3].
• Accommodation: the Sixth Schedule and the Article 371 special provisions give regional identities room within the Union [3].

Comparative Snapshot

Both systems end in the same place: no state can leave on its own. The U.S. got there through civil war, while India wrote the rule into its founding text and pairs it with flexible federalism. Keeping the Preamble's "unity and integrity of the Nation" secure depends on cooperative federalism and timely responses to regional demands, not only on legal bans.