WWI war discussion post

World War I is different from most other wars in that it was not a direct result of aggression by one entity towards another, notwithstanding the assassination of Austrian Archduke Franz Ferdinand by Serbian elements. Instead, it was a consequence of a number of forces amidst a disruption of the tenuous balance of power in Europe. What were these forces and how did they contribute to the outbreak of WWI?

need 1 textbook resource + 1 scholar resources

Brower, D., & Sanders, T. (2014). The world in the twentieth century: From empires to nations (7th ed.). Boston, MA: Pearson.

(possibly from chapter 1+2)