Why is the United States known as a "melting pot"

Why is the United States known as a melting pot Why is the united states negarded as a “melting pot” and a “salad”?用英文解答, what is the main reason why the world trade centre is know as the united nations of commerce? June 1st is the the united states is a d---- country Then the United States is also inju Tom is from the United Kingdom. for 15 years,the united nations has been ___world water dayA congratulating B inspecting C observing D watching the answer is C.TELL ME WHY where is the st.paul's cathedral? January 1st怎么读 是 January the 1st 还是 January 1st老师说读应该读January the 1st，Why？ Why the answer is the reson.why..is St Patrick’s Day (圣帕特里克节) is one of the most important festivals in Ireland (爱尔兰).It is on March 17.It became a 36 holiday in 1903.The first St Patrick’s Day celebration took place not in Ireland,37 in the United States.The firs Why is the United States called a nation of immigrants?哪位哥哥姐姐能帮帮我,用英文回答,谢谢啊 史上最难的英语试题Strong,proud and united,the people of St Petersburg are the modern heros of Russia. 中 Strong,proud and united 做定语?状语?还是? 英语翻译Why is Washington different from any other statein the United States?It is the only state named after thefirst President of the United States,George Washington.It is a beautiful state.It is called the EvergreenState.Washington is very g new york is in the United States对in the United States提问 New York? 英语词语填空!When young people in the United St英语词语填空!When young people in the United States come together for fun ,they will think it is a good chance for dancing.If there _61_ no musicians ,they will play records and tapes.If they