How does the artist use symbols to represent United States expansion policy?

By using Gateway Arch as the symbol to represent United States expansion policy.

Explanation:

Gateway Arch, which is located in St. Louis Missouri, was designed by Error Saarinen in 1948 and its construction was completed in 1965, costing a whopping is $13million at the time.

It derived its name from "Gateway to west", a slogan used by the US during the westward expansion in the 19th century.

The artist used the Gateway Arch symbol to represent the a door to the western part of United States.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.