Battle of Kosovo

Date: June 15, 1389 • Location: Toplica, Serbia

This milestone marked the outbreak and beginning of this historic period, which spanned 1389–1396.

The Ottomans under Sultan Murad I defeat a Serb army under Lazar of Serbia in the battle of Kosovo. Both leaders are killed in the battle.

The Ottoman Empire, also known historically as Turkey or the Turkish Empire, was a state that spanned much of Southeastern Europe, West Asia, and North Africa from the 14th century to the early 20th century, centred in modern-day Turkey. It also controlled parts of southeastern Central Europe between the early 16th and early 18th centuries.