The First Crusade which was in 1096, was the only successful Crusade.
The Paris Peace Conference<span> and the Treaty of Versailles. The </span>Paris Peace Conference<span> convened in January 1919 at Versailles just outside </span>Paris<span>. ... Negotiations at the </span>Paris Peace Conference<span> were complicated. The United Kingdom,</span>France<span>, and Italy fought together as the Allied Powers during the First World War.</span>
Hernán Cortés was a Spanish conquistador or conqueror that conquered the Aztec empire in 1521 with Help of commanders and leaders like Pedro de Alvarado, Gonzalo de Sandoval, Cristóbal de Olid, Nuño de Guzmán and others
Answer:
Austro-Hungry declared war on Serbian and Entangled alliances which brought everybody else into the war
Explanation:
Without food people became malnourished therefore a decrease of population due to famine so no births and productivity since people were too weak to work.
