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![U.S.-IOWA-DES MOINES-CITY VIEW](137903154_15528656290581n.jpg)
Photo taken on March 16, 2019 shows the Iowa State Capitol building in Des Moines, Iowa, the United States. Greater Des Moines serves as a government, commercial, cultural and recreational hub for Iowa. The Iowa caucuses are noteworthy as the first major contest of the United States presidential primary season. (Xinhua/Li Muzi)