以前は真珠湾への攻撃であった以前は、彼らが自分自身を巻き込むべきかどうかの問題でアメリカの意見の変化を引き起こしたのは。
What finally caused a shift in American opinion in the matter of whether or not they should involve themselves, where previously they were predominately isolationist, was the attack on Pearl Harbour.