Which treaty officially ended the Napoleonic Wars and restored the Bourbon monarchy in France?

The Concert of Europe was a system of international diplomacy aimed at maintaining peace and stability after the Napoleonic Wars. Which countries were its principal members?

The Monroe Doctrine, proclaimed by U.S. President James Monroe in 1823, declared that the Americas were closed to further colonization by European powers. What was its primary objective?

The Crimean War (1853-1856) was fought between the Russian Empire and an alliance of which countries?

The Berlin Conference of 1884-1885 was convened to regulate the colonization and trade in Africa. Which European powers were the main participants?

The Triple Alliance was a military alliance formed in 1882 between which three European powers?

The Triple Entente was a diplomatic agreement formed in 1907 between which three European powers?

The outbreak of World War I in 1914 was triggered by the assassination of which Archduke of Austria?

The Treaty of Versailles, signed in 1919, officially ended World War I. Which country was primarily responsible for drafting its terms?

The League of Nations was established after World War I to promote international peace and cooperation. Which U.S. President refused to join the League?

The Kellogg-Briand Pact, signed in 1928, was an international treaty that outlawed war as an instrument of national policy. Which two countries were its primary signatories?

The Munich Agreement of 1938 allowed Nazi Germany to annex the Sudetenland region of Czechoslovakia. Which European leaders were primarily responsible for negotiating this agreement?

The Yalta Conference of 1945 was a wartime meeting between the leaders of which three Allied powers?

The Potsdam Conference of 1945 was a postwar meeting between the leaders of which three Allied powers?

The United Nations was established in 1945 to promote international peace and security. Which city serves as its headquarters?