Tensions were high in Europe during the earily first years of the last century. Countries formed alligences among themselves agreeing to go to war if any of the, were attacked. All it needed was a spark to light off the powder keg.
That spark came in June 28, 1914. The Empire of Austra-Hungry and Serbia had constant tensions and while on tour of Serbia's capitol Sarajevo an assissin's bullet brought the end of life to the Austrian-Hungry Empires heir to the throne, Archduke Ferdinand.
In retalliation Austria-Hungry declared war on Serbia, causing the Russians to come to Serbia's aid and declare war on Austria-Hungry. Germany, Austria-Hungry's ally declared war on Serbia and Russia causing France and England to declare war on Germany and Austria-Hungry. Thus starting WWI.
The first declaration of war was on July 28th, 1914, when Austria-Hungary declared war on Serbia.
The assassination of Archduke Ferdinand
The Potsdam Declaration ordered all Japanese armed forces to surrender during World War II. The repercussion for ignoring the declaration was immediate and total destruction of Japan.
Germany invaded Poland on Sept. 1, 1939 and started WW II.
Poland
What country's declaration of independence are you referring to? A declaration of independence is different from a declaration of war. The American Declaration of Independence stated that the American colonies were breaking off ties with the British Empire and were forming their own government. This led to war but was not a declaration of war. As for the event that sparked WWII: Simple answer- Germany invading Poland More complicated answer- Practically all of European history from the mid-1800s up until 1939, with WWI and global economic collapse as primary stage-setters.
The assassination of Archduke Franz Ferdinand of Austria, by Gavrilo Princip on June 28, 1914. On July 23, 1914, Austria set an ultimatum for Serbia to leave Austria. This ultimatum would expire on July 28, 1914. When the Serbs would still not leave, Austria declared war on Serbia.
The assassination of Archduke Franz Ferdinand(heir and next in line to the Austria-Hungary throne)
The first declaration of war was on July 28th, 1914, when Austria-Hungary declared war on Serbia.
The Japanes attack on Pearl HarborThe German declaration of war on the US
The Nazi invasion of Poland on September 1st, 1939 was the first event of World War 2.
The FIRST world series
The first document to be posted on the world-wide web as the Declaration of Independence poopy poop
The first world fair was held in Paris, France in 1889. It was for this event that the Eiffel Tower was constructed.
Probably the World Series. If you mean a single event, probably the All Star game, or the first game of the World Series.
E.g. the First World War.
Karan Chehall.