What are the main causes of WWI? Be sure to include an example to represent each cause. M- A- N- I- A-

World war one started as a war between Austria-Hungary and Serbia after the assassination of Archduke Franz Ferdinand by Gabriel Princip, a Serbian nationalist. Austria-Hungary is allies with Germany, so they call upon them to enforce strict rules on Serbia, who is allies with Russia. Russia is allies with France and France begs Britain for help as Germany moves through Belgium to get to France. When the Ottomans join the Central Powers, they begin attacking British strongholds in Africa and the Middle East, which brings Britain and their commonwealth countries into the conflict such as Australia and New Zealand. When the Lusitania was sunk with American passengers on board in 1917, the United States under Woodrow Wilson declares war on the Centeal Powers, specifically Germany.

Explanation:

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studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.