Describe what yellow journalism?

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Yellow journalism was a style of newspaper reporting that emphasized sensationalism over facts. During its heyday in the late 19th century it was one of many factors that helped push the United States and Spain into war in Cuba and the Philippines, leading to the acquisition of overseas territory by the United States.

Explanation:

c) troops march forward in close formation against newer, more accurate weapons

it affected it because the kingdoms (with trade) slowly got richer and richer.