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 Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises. This power is considered by many to be essential to the effective administration of government. As argued under the Articles, the lack of a power to tax renders government impotent.