Aconference that resulted in treaties limiting naval construction and preserve peace in the 1920s was held in the city of tokyo, washington, dc, london, moscow.

  Washington D.C.

Explanation:

  It was known as the Washington Naval Conference or also the Washington Disarmament  Conference. It took place between 1921 and 1922 and was called by U.S. President Warren G. Harding. The world´s largest naval powers gathered there to discuss naval disarmament and ways to relieve growing tension in East Asia.

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maybe #3? try that i think its correct

congress failed to remove johnson. but it did succeed in getting control of efforts to re-build the south following america's civil war. radical republicans wanted to punish the south for starting the war. they also wanted to be sure new governments in the southern states would support the republican party.