Root: Korean American Saga

. As the 20th century unfolded, the first wave of Korean immigrants, known as "Issei," began to arrive in the United States, predominantly settling in regions such as Hawaii and California.. As the 20th century unfolded, the first wave of Korean immigrants, known as "Issei," began to arrive in the United States, predominantly settling in regions such as Hawaii and California.. As the 20th century unfolded, the first wave of Korean immigrants, known as "Issei," began to arrive in the United States, predominantly settling in regions such as Hawaii and California.