Explain the causes and consequences of the war of 1812

Causes of the war of 1812, also known as "Second War of Independence" were the trade restrictions imposed by the British Government to the United States of America, as to impede America´s trade with France; also, the British navy was attacking United States ships to force the sailors to join the Royal Navy. Effects were that, after a stalemate, peace was reached bringing a long period of peace between the two nations.

punish germany and keep it weak,

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.