Answer:
1.
Lincoln said "that soil was not ours" because he was referring to the disputed territory between the United States and Mexico, which was the main cause of the war. Lincoln believed that the United States did not have a rightful claim to that soil and that the war was unjustified.
2.
Lincoln did not believe that the war was for the "good of the people." He believed that President Polk had provoked the war in order to expand the territory of the United States and increase his own political power. Lincoln believed that the war was unjustified and that it was causing unnecessary suffering and destruction.
3.
Lincoln accused President Polk of acting like a King because he believed that Polk was using his power as President to start a war that was not supported by Congress or the American people. Lincoln believed that Polk was acting like a monarch, making decisions without consulting the people or their elected representatives.
4.
This document does not directly answer the question of whether the United States was justified in going to war with Mexico. However, it does provide insight into the debate over the war and the concerns of those who opposed it. Lincoln's views were shared by many Americans who believed that the war was unjustified and that it violated the principles of democracy and the rule of law. Ultimately, whether the war was justified or not is a matter of historical interpretation and debate.