The answer is B, established a free trade zone with Mexico
These two men seated at the table represent the Irish , with top hat and vest, and German (smoking pipe and drinking german beer) inmigrants in the 1800s in the US. The cartoon refers to the 1882's Chinese Exclusion Act, which was the first American law preventing the inmigration of an specific ethnic/national group. This can be apreciated in the "New Declaration of indepence" at the back of the cartoon.
The legend in the bottom ("If the Yankee Congress can keep the yellow man out, what is to hinder them from calling us green and keeping us out too?") refers to the raising fear in Irish and German groups of facing the same fate of Chinese inmigrants. This let us know American attitude towards inmigrants who weren't seen as equals and were discrimitated for their origins and skin color.
He made the wrong decision, in my opinion, but that’s more of an opinion type thing, but I think he did because of his actions during the revolutionary war, which is, he led troops from Great Britain and loyalist to the throne, he was against American colonist who are fighting to gain their independence from Great Britain. Grant was also perhaps falsely accused of committing war crimes, for which she received no punishment.
The correct answer to this open question is the following.
The Declaration of Independence provides a reason to revolt against Britain based on a promise that a new government will be able to secure the natural rights of its citizens. The government of the United States has done this to the extent that it has protected the American people since then in many different wars against Britain in the War of 1812, or the Mexican-American War, or the Spanish-American War.
During the 1900s, the United States government tried to maintain the foreign policy of neutrality in World War I and World War II, but different events and incidents forced President Woodrow Wilson and Franklin D. Roosevelt, respectively, to enter the international conflict in order to defend America from the threat of Germany.
The only questions left unanswered are regarding domestic politics such as racism, inequity, civil rights for minorities.