1)When did WW1 start and end
2) What countries were involved in Ww1

1) 28 July 1914

2) Germany, Austria-Hungary, Bulgaria and the Ottoman Empire fought against Great Britain, France, Russia, Italy, Romania, Japan and the United States.

Explanation:

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1) July 28, 1914 – November 11, 1918

2) Germany, Austria-Hungary, and Turkey) against the Allies (mainly France, Great Britain, Russia, Italy, Japan, and, from 1917, the United States).

Explanation:

1) On June 28, 1914, a young Serbian nationalist shot and assassinated Archduke Franz Ferdinand, the successor to the Austro-Hungarian Empire (Austria), in the city of Sarajevo, igniting World War I. The murderer was a supporter of the Kingdom of Serbia, and Austrian troops invaded Serbia within a month.

After four years of fighting and the deaths of 8.5 million troops as a consequence of battle wounds or disease, the Allies won World War I. More information about the Treaty of Versailles may be found here.

2) During World War I (1914–1918), France, Britain, Russia, Italy, Japan, and the United States led a coalition of countries against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, Bulgaria, and its colonies, known as the Entente Powers.

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they killed other men

explanation: