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1778 in the United States - Wikipedia
Historical Events in 1778 - On This Day
1778 - Wikipedia
1778年 - 百度百科
Battle of Monmouth (1778) | Summary | Britannica - Encyclopedia Britannica
What Happened in 1778 - On This Day
Franco-American Alliance | 1778 Treaty, French-US Relations
1778年 - 维基百科,自由的百科全书
American Revolution: Treaty of Alliance (1778) - ThoughtCo
American Revolution | Causes, Battles, Aftermath, & Facts