The fourteenth century left a memory of itself not only by the "black death," which took the lives of more than 20 million people, but also by the equally terrible invasion of Turkish hordes in the Balkans. The states of Europe, mired in bloody feuds, could not give a proper rebuff to the invaders, and only a small army of Serbs led by Prince Lazarus stood in the way of the enemy, paying with their blood for the freedom of other peoples.