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Which of these happened FIRST, following the assassination of Archduke Franz Ferdinand on June 28, 1914?

Responses
A France invaded Belgium.France invaded Belgium.
B Germany declared war on Russia.Germany declared war on Russia.
C Austria-Hungary declared war on Serbia.Austria-Hungary declared war on Serbia.
D Russia mobilized its forces for a possible war.Russia mobilized its forces for a possible war.

1 answer

The correct answer is C: Austria-Hungary declared war on Serbia.

Following the assassination of Archduke Franz Ferdinand on June 28, 1914, Austria-Hungary declared war on Serbia on July 28, 1914, which was the first significant action leading to the outbreak of World War I.