Tripoli declared war on the United States after the US refused to pay a bribe.
tripoli
Mobilization
Henry David Thoreau.
He practiced civil disobedience by not paying taxes to protest the war.
Germany declared war on the US, the US then declared war on Germany.
I will only list the more important countries involved in the war because there were many minor countries that are of very little importance to the war.Austria-Hungary declared war on Serbia July 28 1914Russia declared war on Austria-Hungary July 30 1914Germany declared war on Russia August 1 1914Germany declared war on France August 3 1914Germany declared war on Belgium August 4 1914Britain declared war on Germany August 4 1914Montenegro declared war on Austria-Hungary August 5 1914Serbia declared war on Germany August 6 1914Montenegro declared war on August 9 1914France declared war on Austria-Hungary August 11 1914Britain declared war on Austria-Hungary August 12 1914Austria-Hungary declared war on Belgium August 22 1914Japan declared war on Germany August 23 1914Japan declared war on Austria-Hungary August 25 1914Russia declared war on Ottoman Empire November 1 1914Serbia declared war on Ottoman Empire November 2 1914Montenegro declared war on Ottoman Empire November 3 1914Britain declared war on Ottoman Empire November 5 1914France declared war on Ottoman Empire November 5 1914Italy declared war on Austria-Hungary May 23 1915Italy declared war on Ottoman Empire August 21 1915Bulgaria declared war on Serbia October 14 1915Britain declared war on Bulgaria October 15 1915Montenegro declared war on Bulgaria October 15 1915France declared war on Bulgaria October 16 1915Italy declared war on Bulgaria October 19 1915Russia declared war on Bulgaria October 19 1915Romania declared war on Austria-Hungary August 27 1916Italy declared war on Germany August 27 1916Germany declared war on Romania August 28 1916Ottoman Empire declared war on Romania August 20 1916Bulgaria declared war on Romania September 1 1916United States declared war on Germany April 6 1917United States declared war on Austria-Hungary December 7 1917The Armistice occurred November 18 1918Note: where Britain is listed, this includes declarations of war by British Dominions also(Canada, Australia, New Zealand, South Africa and India), as they were not completely independent during the First World War and couldn't conduct Foreign Policy themselves.
Tripoli.
tripoli
The Barbary Pirates.
Britain told Germany to remove their troops from Poland. Germany refused and Britain declared war on them
Mobilization
ZERO
Henry David Thoreau.
He practiced civil disobedience by not paying taxes to protest the war.
British Parliament
No, that was more like the Mexican War. The American Civil War was a rebellion of eleven states that declared themselves to be a separate nation, which Congress refused to recognise.
The final demand is called an "Ultimatum" which is Latin for "the last one", that is a demand. If the ultimatum is refused or ignored a state of war is declared and war commences. This is the correct and legal procedure to declare war.
Russia was bound by treaty with Serbia, Montenegro declared war on Austria-Hungary. Germany declared war on Russia. France bound by treaty with Russia declared war on Germany, Great Britain declared war on Germany after Germany refused to respect the neutrality and sovereignty of Belgium. United states tried to stay neutral but were to threatned by Germany's submarine attacks on Trade vessels to Germany's enemies. Japan had a military agreement with Britan, so declared war on Germany.