evolve - undergo development or evolution; Modern man evolved a long time ago speciate, differentiate, specialise, specialize - evolve so as to lead to a new species or develop in a way most suited to the environment. derive - come from; The present name derives from an older form
The Sixteenth Amendment (Amendment XVI) to the United States Constitution allows the Congress to levy an income tax without apportioning it among the states or basing it on Census results.
The 16th Amendment gives the Federal government a direct claim on the lives of American citizens by enabling Congress to levy a direct income tax on individuals. Until the passage of the 16th amendment, the Supreme Court had consistently held that Congress had no power to impose an income tax.