Explain why world war on broke out in 1914

World war 1 broke out in 1914 because a group of Serbian nationalists (The Black Hand) assassinated the duke of Austria-Hungary. Austria -Hungary threatened Serbia with a bunch of wishes that they wanted Serbia to due for them. Due to the treaty between Serbia and Russia, Serbia said no. Germany, who had a treaty with Austria-Hungary threatened to attack if Russia mobilized its army. Russia did and Germany invaded Belgium. This brought Great Britain and France into the war.

To spur trade, A, B, and C deicide on economic integration where there were  they agreed on a common external trade policy, and allowed factors of If seven countries formed a common market, which of the following would be a feature of their trade agreement?  lowers foreign exchange and hedging costs in Europe.

Explanation: