What phrase from the preamble justifies a law like the affordable care act

Why were the numbering trials held from 1945 to 1946 ?

How did the international community respond to south africa’s policies in the 1980s?

23. how does specialization among nations encourage interdependence? nations work together to share labor and resources to produce vital goods. nations sign treaties prohibiting taxes on imports. nations produce specific goods and then trade to obtain things they need. nations that are more developed agree to fund development in nations with limited industry.