11h 17min, jul 28, 1914 y - World War I Begins
Description:
Serbia mobilized their army because they thought Austria-Hungary was getting ready for war. Serbia went to Russia for assistance and Austria-Hungary declared war on Serbia.The start of the first World War shows that many countries can get involved quickly because there are alliances between countries.
Added to timeline:
Date:
11h 17min, jul 28, 1914 y
Now
~ 111 years ago