Answer:
<em><u>B) the Philippine American war</u></em>
Philippine-American War was not related to any of the causes of WW1
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The steam locomotive allowed for the transportation of goods at a much more rapid rate than by horse. The railroad let people know exactly where and when goods would arrive. The trains also gave the cargo a safer ride as it was much more difficult to rob a train than a horse drawn transport. As more railroads were built, products could travel farther than ever before in a timely manner. This brought down the cost of freight transport and increased profits for many businesses.
Corrupt leaders made the democracy of Rome compromise itself and led to monarchy and then sometimes to ruin
Explanation:
The Democracy of Rome had many intricacies that excluded a number of people from ever participating and made it in a way an exclusive group that could ever hope to hold political power.
This made it easier for the government to be very corrupt and they had very little accountability.
The people became dissatisfied and thus many times supported the foundation of monarchy or even found the city in state of civil war multiple times in centuries.