What was the biggest impact on World War 1?

Countries at war with each other in Europe in 1809? What is Nefertiti crown called? Explain how the assassination in Sarajevo led to the start of World War 1? What city was once known as the spy capital of the world? Why was it impossible for Abraham Lincoln to lose himslef in the crowd? How did Arabs feel about the French and British after world war 1? Will there be a second series of britannia high? How did mercantilism affect world history? Which person would have been LEAST likely to be considered a Progressive in the early 20th century? Is conscription used today? What was mass culture? What set World War 1 apart from previous warsconflicts? How many countries existed in 1976? What was one reason for the great diversity of native AMerican groups? What continents did the mongol empire cover? How much are world saver coin's? What is the name of 1st person present in the world? What of these invention greatly contributed to the expansion of sea exploration in the 1400s? What were worcesters functions 200 years ago? What does that mean when somebody says your there world?