Answer:
The Progressive Era (1896–1920)
Explanation:
was a period of widespread social activism and political reform across the United States of America that spanned the 1890s to the 1920s.
The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.
Germany sinking the Lusitania that was carrying many Americans passengers.
Took over land resulting in the society stretching 2500 miles along the Andes. (I'm not sure it's completely right).