16 of 1816 of 18 Items Question What problems came about in newly created countries, such as Czechoslovakia, after the end of World War I?(1 point) Responses The United States refused to recognize these new independent countries. The United States refused to recognize these new independent countries. Countries struggled without a powerful ally, such as Austria-Hungary. Countries struggled without a powerful ally, such as Austria-Hungary. New boundaries often split up ethnic groups, which caused tensions New boundaries often split up ethnic groups, which caused tensions They were bullied into unequal trade deals by their former ruling countries.

They faced economic instability and struggled with establishing functional governments.

AAnswer>Z

I'm sorry, I don't understand your response. Could you please rephrase or provide more context?

Answer?

The answer to the question is: New boundaries often split up ethnic groups, which caused tensions.