In the election of 1800, rivals and each vied for the presidency under the democratic-republican banner.

In the United States presidential election of 1800 (sometimes referred to as the "Revolution of 1800"), rivals Vice President Thomas Jefferson and Incumbent President John Adams both vied for the presidential seat.

With Jefferson being a Democratic-Republican, and Adams being a Federalist, the campaign for the election was bitter as there were both slander and personal attacks on both parties. Jefferson emerged as the victor, grabbing 61.4% of the popular votes, while Adams only got 38.6%. 

The league of nations was found in 1919 to keep peace after world war l.but it failed to prevent world war ll in 1939,so in 1945 the nations of the world set up a new organization,the united state (un).since then, the un has encouraged international cooperation and worked to resolve conflict

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