The more powerful country opened the door of the weaker one by gunboat diplomacy.

强国用炮舰外交打开了弱国的大门。

The United States had been interested in the Pacific for half a century already, in 1853 the US had sent a fleet to Japan to bully the Japanese into a treaty relationship through gunboat diplomacy do business or we shoot.

美国对太平洋地区感兴趣已经有五十年了，1853年美国派遣一支舰队去日本，利用炮舰外交恐吓日本与自己缔结条约关系。