European nations had new sources of raw materials and other resources.
Answer:
On March 25, 1911, the Triangle Shirtwaist Company factory in New York City burned, killing 145 workers. The deaths were largely preventable–most of the victims died as a result of neglected safety features and locked doors within the factory building. The tragedy brought widespread attention to the dangerous sweatshop conditions of factories, and led to the development of a series of laws and regulations that better protected the safety of workers.
Explanation:
The correct answer is letter C. The assassination of Archduke Francis Ferdinand. That is the event that triggered the start of World War I. Archduke Ferdinand was from Austria, the heir to the throne of Austria-Hungary. He was assassinated by Yugoslav nationalist Gavrilo Princip on June 1914.