What was the main content of the De Lome letter?

The main content of the De Lome letter was indeed a mockery of the President of the USA. Written by the Spanish Minister to the United States, Enrique Dupuy de Lome, this letter criticized President McKinley, labeling him as weak and indecisive. The letter expressed de Lome's disdain for McKinley's handling of the Cuban situation and, by extension, his perception of American foreign policy.

The publication of the letter in the American press caused a scandal, heightening tensions between the United States and Spain, especially at a time when the U.S. was becoming increasingly involved in the Cuban struggle for independence. This incident contributed to the growing sentiment for intervention in Cuba, ultimately leading to the Spanish-American War. The other options do not accurately capture the primary focus of the letter, which centered around de Lome's personal view of McKinley rather than any direct criticism of military actions or a plea related to Cuban independence.