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.
Taxing power. Congress has power under Article I, Section 8 to lay and collect taxes, duties, imposts and excises, to pay the debts and provide for the common defense and general welfare. Under the 16th Amendment, Congress can collect taxes on incomes that are derived from any source.