George Washington, 1789-1797 John Adams, 1797-1801 Thomas Jefferson, 1801-1809 James Madison, 1809-1817 James Monroe, 1817-1825 John Quincy Adams, 1825-1829 Andrew Jackson, 1829-1837 Martin Van Buren, 1837-1841 William Henry Harrison, 1841 John Tyler, 1841-1845 James Knox Polk, 1845-1849 Zachary Taylor, 1849-1850 Millard Fillmore, 1850-1853 Franklin Pierce, 1853-1857 James Buchanan, 1857-1861 Abraham Lincoln, 1861-1865 Andrew Johnson, 1865-1869 Ulysses S. Grant, 1869-1877 Rutherford Birchard Hayes, 1877-1881 James Abram Garfield, 1881 Chester Alan Arthur, 1881-1885 Grover Cleveland, 1885-1889 Benjamin Harrison, 1889-1893 Grover Cleveland, 1893-1897 William McKinley, 1897-1901 Theodore Roosevelt, 1901-1909 William Howard Taft, 1909-1913 Woodrow Wilson, 1913-1921 Warren Gamaliel Harding, 1921-1923 Calvin Coolidge, 1923-1929 Herbert Clark Hoover, 1929-1933 Franklin Delano Roosevelt, 1933-1945 Harry S. Truman, 1945-1953 Dwight David Eisenhower, 1953-1961 John Fitzgerald Kennedy, 1961-1963 Lyndon Baines Johnson, 1963-1969 Richard Milhous Nixon, 1969-1974 Gerald Rudolph Ford, 1974-1977 James Earl Carter, Jr., 1977-1981 Ronald Wilson Reagan, 1981-1989 George Herbert Walker Bush, 1989-1993 William Jefferson Clinton, 1993-2001 George Walker Bush, 2001-2009 Barack Hussein Obama, 2009-2016 Trump, 2017
I’m pretty sure they fought and conquered neighboring tribes. They also had Tenochtitlan, the capital, in the middle of lake Texcoco, which provided protection. They then defeated more tribes and taxed the tribes until the Aztecs were flourishing where they were invaded by Hernan Cortez
