Answer:
The answer is C. Ireland and Germany.
Step-by-step explanation:
The political and economic conditions, which were" chaotic" in the eyes and the views of some scholars were the main reason why so many Germans and Irish people came to USA.
In the Newly formed nation, they enjoyed a large degree of independence and control over their decisions rather than in the homelands.
Moreover, in the 19th and 20th centuries, most of the immigrants came to USA from Western Europe and the Northern Europe!