The given information relating to the acquisition of land, Panama Canal, nations league, and advancements in technology is best categorized under the progressive era.
Option A is the correct answer.
The defined time frames classified by the historians on the basis of similarities during that time frame are called as historical era. These eras can be the Cold war era, the Progressive era, the Roaring twenties, etc.
The progressive era was the time frame in the US country in the years from 1890 to 1920. It was the time when the main aim was to abolish the corruption practices, provide protection to workers and consumers in the market as well as allow the women to give the right to vote. It was the time duration of initiating the social and political changes in order to create a better society.
Therefore, the provided information should be categorized under the time of the progressive era.
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