Old immigrants were people who immigranted generally from Europe, for example, Britain or Germany.
New immigrants were people generally from Asia and the Pacific, for example, China, Japan, etc.
Hope this helps
I think its C because America enters the war when German started sinking there merchants ships.
Answer: False. True, True
I think your answer is
B. 179O's
I’m thinking it was the boxer rebellion as that happened not long after the open door policy