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Saturn.
Any country can declare war on anybody else. What matters is can you back it up?
Germany was the first country to declare war on Serbia in World War 1. The other countries were pulled into the war because the had alliances with either Serbia or Germany.
Austria-Hungary declared war on Serbia after the assassination of Arch-Duke Ferdinand starting WWI
well Germany did declare war against the Jews but it was the Jews who decleared financial war first in March 1933
Austria-Hungary.
Germany
Austria-Hungary
(Austria-hungary) began to move troops but didn't declare war.
France
CANADA
italy