美国参战改变了战争格局，影响深远，塑造了国际关系的未来走向。风骚老师

　　In this final installment of the "Why We Fight" propaganda series, the subject focuses on the United States of America. We learn of its good qualities and the things worth fighting for. With that established, we learn of the history of the United States' population shifting opinion towards siding with the Allies against the Axis until the attack on Pearl Harbour which brought A... (展开全部)