Question

Complete this paragraph about how the countries of Europe plunged into

World War I:
When
declared war on Serbia, ,
came to the aid of its
"little brother” Serbia. Germany then had to come to the aid of Austria-
Hungary, which meant that
would need to help Russia. Finally,
was bound to help France in the event of war with Germany.

Answer 1

A

Step-by-step explanation:

its A because Austria - Hungary was the one who declared war on Serbia

Answer 2

Austria-Hungary, Russia, France, Britain