in thE EArly 1930s, thEAmEriCAn ForEign poliCy wAs isolAtionist, But thE ______ suDDEnly ChAngED thE wholE situAtion, whiCh propEllED thE u.s. into thE sEConD worlD wAr.
A、pEArl hArBor AttACkB、BomBing oF guAm islAnD
C、sEizing oFAmEriCAn mErChAnt ships
D、sinking oFAmEriCAn pAssEngEr ships