It would be called a presidential system.
president
Andrew Jackson was famous for being a president and for "making" the democracy called "Jacksonian" Democracy, which was a democracy that followed Jackson's political and physical philosophies.
(Although it is commonly called President's Day to honor both Washington and Lincoln's birthdays.) It was not invented by any president. It is a federal holiday.
A republic is also called a representative democracy.
It might be Gandhi (for certain reasons), it might be Nehru (as first president of the new independent democracy).
A democracy.
Constitutional democracy is the form of democracy in the United States.
A limited franchise democracy called a representative democracy.
This type of democracy is called a Parliamentary Democracy or a Parliamentary Republic.
The form of leadership in Germany is the chancellor, who is like the president. The government is a parliamentary democracy, and the Parliament (kind of like congress) is called the Bundestag.
The form of leadership in Germany is the chancellor, who is like the president. The government is a parliamentary democracy, and the Parliament (kind of like congress) is called the Bundestag.
The United States is a democracy. Which means that America "Votes" for who they want as the president. For America the leader is called the president. The current president in 2009 is Barack Obama.