Text related information The louisiana purchase rn siz y a prel he Lot pI ore sea动s i地 00 n n aut ppI Ri sIns Cal Louisiana Purchase, 1803 Current Boundaries @1994 EB, Inc.The Louisiana Purchase Louisiana (路易斯安那州) is a state of the southern U.S. on the Gulf of Mexico（墨西哥湾）; originally a French colony, bought by the United States as part ofthe Louisiana Purchase. The Louisiana Purchase refers to the land deal（土地 交易） made between U.S. president Thomas Jefferson and Napoleon Bonaparte of France in 1803. Jefferson authorized the purchase of land from the Mississippi River （密西西比河） westward to the Rocky Mountains (洛基山脉）and from the Gulf of Mexico northward to Canada for roughly $525 million. Though it was a great bargain, doubling the size of the U.S. at the time and adding richly productive farmlands, the Louisiana Purchase was controversial because it was unclear that the president had the authority to make such a purchase without the approval of Congress （美国 国会）. Text-related information