What technology is used by Gast in the painting to convey the message about
expanding West?

Gast uses his painting to tell the message that the United States is destined to expand West. Technology, such as railroads and telegraph wires, is moving west as well as many people. Gast is trying to encourage interest in moving west.

the romans were initially interested in expansion via sicily (which at that time was a cultural melting pot), part of which lay under carthaginian control. at the start of the first punic war (264-241 bc), carthage was the dominant power of the western mediterranean, with an extensive maritime empire

b

being given a fair trial before a jury