Definition: Diplomacy is the conducting of relations between nations, as in making agreements.

The United States was involved in many diplomatic efforts during the late nineteenth century, including negotiations to purchase Alaska and annex Hawaii, the opening of Japan, and the establishment of an “Open Door” policy in China. The presidents of the period adopted different styles of diplomacy including Teddy Roosevelt’s “Big Stick” diplomacy, William Howard Taft’s dollar diplomacy and Woodrow Wilson’s moral diplomacy.