在下面给定的文本中，找到所有以大写字母开头的单词，并输出这些单词。
The United States of America has 50 states, with 48 located in the contiguous United States plus Hawaii and Alaska. The capital city is Washington, D.C., and the largest city is New York City.
United, States, America, Hawaii, Alaska, Washington, D.C., New, York, City.