# data[].attributes.body
The Archduke Ferdinand of Austria-Hungary was murdered by Serbian nationalists.

# data[].attributes.body
Austria-Hungary declared war to Serbia after the failed Ultimatum to rule over Serbia.

# data[].attributes.body
Germany Declares war on Russia to accompany his former alliance country Austria-Hungary.

# data[].attributes.body
Germans enacted their Schlieffen Plan of attacking France first and then going against Russia.

# data[].attributes.body
They attacked Belgium, a neutral country, which brought Britain into the war by declaring war to Germany.