Answer:
Simply put, a "turning point" is when things were going one way before an event and they were going the other way after that event. The Battle of Britain was a turning point in WWII in Europe in the western theater because prior to that Germany was going where it wanted to go and defeating everyone in the their path.
Explanation:
Socialism sought to control the means of production, like factories and farms.
("Means of production" refers to the people and infrastructure used to create goods.)
Princip, a Serbian nationalist enraged by the annexation of Bosnia and Herzegovina by the Austro-Hungarian empire