Most US citizens are either immigrants or descendants of immigrants. More than sixty million (60,000,000) people have left the countries of their birth and come to the United States to live. Some came for excitement and adventure. Others came to escape poverty and hunger, or political and religious oppression. Still others were brought over from Africa as slaves. These immigrants have brought their customs, languages, and foods, and have made the United States a country of great racial and ethnic diversity. The United States is a country of immigrants. Some people came for【46】and adventure. Others came to【47】poverty and【48】, or political and religious【49】. Still others were brought over from Africa【50】