Efforts for alliance lasting about 30 years could be decided into three periods sequentially,including Bismarck Period,the New Course Period and the World Policy Period.

• 本文将英德近30年的结盟活动分为三个阶段：俾斯麦时代的英德结盟活动，“新路线”时期的英德结盟活动和“世界政策”时期的英德结盟活动。