Almost all of the Americans who were killed in the war diedat the Battle of San Juan Hillas a result of newly improved weaponsfrom yellow fever or other diseases

Most American deaths in the Spanish-American War were caused by disease, not by combat. Yellow fever and other illnesses claimed far more lives than the fighting at San Juan Hill or newly improved weapons. Therefore, the correct choice is “from yellow fever or other diseases.”

AI-written and checked against the verified answer.