Was The U.S justified for Going to war with Spain?

The U.S. was justified to go to war with Spain for many reasons. Although the war cost the U.S. 385 men in battle plus several thousand that died form disease and poisoned meat and $250 million (which is equivalent to $6,694,745,025.88 today), the U.S. gained Puerto Rico, Guam, and the Philippine islands (100,000 square miles, 10 million people for 20 million). The U.S., Particularly president McKinley, did not want to get involved or limit the involvement of the U.S. in the Philippines. A strong current of Public opinion towards the annexation of the Philippines changed President McKinley's mind. The war also caused the U.S. to emerge as a great power, but also reflected the quick national development of the 19th century. The treaty contained many items that were good for the U.S.. Spain would release all claim of sovereignty over Cuba and the U.S. would gain control of many Spain owned territories. The U.S. would also acquire the Philippines and forced Spain to release all prisoners. The Spanish would also have to evacuate all military forces from the territories that they had to give up. All of the territories would get all freedoms such as religion, speech, press, etc.