The significant land development that President Jefferson made was the Louisiana Purchase. The correct option among all the options given in the question is the third or the second last option. The Louisiana Purchase was created in the year 1803 by President Jefferson. It was an agreement between the United States of America and France
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It was important because purchase the indentured servants and slaves to cultivate it and to buy things from England
The answer would be the first one because during the Nullification Crisis, he sided with the south and agreed with them that they shouldn't have to follow a law they believed to be unconstitutional.
