Help of these 3 questions please?

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.

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.

the crusaders are identified in the painting;

c. by the red crosses on their backs

a king decides to declare war on a neighboring country without the input of any advisers