Answer:
Austria
Explanation:
Crown prince and princess of Austria were killed by Black Hand Society of Serbia.
The French Revolution, and the invasion of Spain by the French
The industrial revolution began in the 1700s and introduced the use of fossil fuels as a main source of energy. Those fossil fuels have and continue to play a dominant role in global energy systems. Because of that those fuels impacted our energy crisis today, humans did not try to find or bothered to find another resource of energy, and now the fossil fuels reserves are ending and the environment had a big impact because of it.
The scientific revolution was the creation of modern science, and scientific study. It occurred during the 1500's and 1600's, and was caused by the Renaissance. The Enlightenment was where every social, political, and economic problem would be solved through the use of reason.