after the assassination of the austrian archduke, which happened first?\no germany invaded belgium.\no great…

after the assassination of the austrian archduke, which happened first?\no germany invaded belgium.\no great britain invaded germany.\no russia declared war on serbia.\no austria declared war on serbia.

after the assassination of the austrian archduke, which happened first?\no germany invaded belgium.\no great britain invaded germany.\no russia declared war on serbia.\no austria declared war on serbia.

Answer

Brief Explanations:

The assassination of Archduke Franz Ferdinand of Austria - Hungary in 1914 was a trigger for World War I. Austria - Hungary issued an ultimatum to Serbia. When Serbia did not fully comply, Austria declared war on Serbia on July 28, 1914. Germany invaded Belgium later as part of the Schlieffen Plan. Great Britain did not invade Germany first. Russia mobilized in support of Serbia, not declaring war on it.

Answer:

Austria declared war on Serbia.