Jimmy Carter had no particular "accomplishments" in foreign policy. One of his biggest failures was to relinquish sovereignty over the Panama Canal to Panama, but letting the religious fanatic Ayatollah Khomeini depose the Shah of Iran probably comes close to this.
reopening of British West Indian ports
My guess would be when a military helicopter crashed during an unsuccessful attempt to rescue a group of Americans being held hostage in Iran. The report that the hostages had been set free came a half hour after the end of Carter's Presidency.
Nothing
The Louisiana Purchase. The Louisiana Purchase was the gaining of 828,800 square miles of France's land by the United States in 1803.
Assuming you are referring to Harriet Tubman, she did not have a foreign policy.
Foreign people to China effected the success and downfall of the Chinese dynasties. Why? The Foreign peoples could have come in whenever they wanted to and wage a full blown war against China and China would be unprepared, and China would soon have met its downfall. If the foreign peoples decided not to wage war on the Chinese Empire, then the Empire would be successful. Thus, the foreign people to China effected the success and downfall of the Chinese dynasties.
Yes he did.
NOTHING
Hoover
encouraged Hitler's confidence propaganda success for the Nazis allies underestimated Hitler
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by work managing