To accurately determine which agreement or event led to the differences between the maps, one would need more context or a visual comparison of the maps in question. However, I can provide a brief explanation of each option you presented, which may help you decide based on your understanding of the maps:
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Missouri Compromise: This was an agreement made in 1820 to balance the power between slave and free states. It allowed Missouri to enter the Union as a slave state while Maine entered as a free state, and it established the 36°30′ parallel as the line dividing future slave and free territories.
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Treaty of Ghent: This treaty ended the War of 1812 between the United States and Britain and restored borders prior to the war but did not significantly change territorial boundaries in North America.
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Adams-Onís Treaty: This 1819 treaty between the U.S. and Spain defined the boundary between the two countries and resulted in the U.S. acquiring Florida as well as a claim to the territory that is now the southwestern part of the U.S.
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Louisiana Purchase: This was the 1803 acquisition of land from France that doubled the size of the United States, greatly expanding its territory westward.
To choose the correct response, consider what changes the maps show regarding borders or territories. If they illustrate the expansion or change of boundaries in relation to the U.S. territories, the correct answer could be the "Louisiana Purchase." If they highlight the division of states based on slavery, then it might be the "Missouri Compromise."
Without seeing the maps, it is challenging to provide a definitive answer. Please use the context given above to deduce the correct choice based on the details the maps depict.