McCulloch v<span>. </span>Maryland<span> (1819) is one of the first and most important </span>Supreme Court cases<span> on federal power. In this </span>case<span>, the </span>Supreme Court<span> held that Congress has implied powers derived from those listed in Article I, Section 8. The “Necessary and Proper” Clause gave Congress the power to </span>establish<span> a national bank.</span>
Leyes de Burgos might be the answer
Which war? World war 2? If world war 2, it was due to the fact that their home towns were in rubble, and were looking for a new home for them, and their family.