Answer:
The alliance system, which were the triple alliance formed by Germany,Italy and Austria-Hungary and the Triple Entente formed by UK,France and Russia.
The alliance system had caused great suspicion among the nations, as the alliance system was meant to be kept secret. The nations would be wary that they were to start war as they found backups for themselves.
It also support a nation's will to start a war as they would have back up, this urged WWI to happen.For example, with the support of Germany (blank cheque) Austria-Hungary sent an ultimatum to Serbia,which was impossible for Serbia to fulfill, finally lead to the outburst of WWI.
In addition, the system would enlarge the war scale to become a world war as one another would be drag into the war if one were involved.
Explanation:
In 1898, the Spanish-American War broke out. The US became a powerhouse in Asia thanks to this conflict. With the annexation of Guam and the Philippines, the US expanded its sway over Asia. A peace treaty was concluded between the two nations following the conflict.
As a result of the United States' success in the war, the Spanish were forced to renounce their claims to Cuba and hand up control of Guam, Puerto Rico, and the Philippines to the United States in a peace treaty. During the battle, the US also annexed Hawaii, an independent state.
The US gained ownership of and/or influence over a large number of additional areas as a result of its victory in the Spanish American War. A new far-flung empire was formed as a result of these and other geographical acquisitions.
To learn more about Spanish-American War
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The Indus River Valley CivilizationLocated in north-western India, the Indus river valley civilization was a collection of villages located along the Indus River that lasted from about 2500 to 1800 BC. The citadel overlooked the lower residential part of the city which had houses placed close together and were fairly large and offered privacy. Mohenjo-daro also had an extensive drainage system available throughout the city and was considered advance for its time.
Since it sparked a public scandal, you can think to how people feel about scandals. After getting more info about the Petrov Affair, people were probably felt angry, betrayed, and shocked. (Probably mostly shocked, and maybe some even began to form a prejudice against Russians?)
To help you could see if you could find any quotes about it, on how people felt from maybe news articles or something. You can also go on the history channel's website.
Hope this helped! Good luck!!