Argentina

Argentina is a country in.

History
When Bart calls Argentina, to see if their water drains clockwise, he ends up phoning Adolf Hitler. However, Bart hangs up before Hitler has a chance to answer the phone. The country is also seen on Bart's globe a number of times.

While Krusty delivers Bart a pizza at Burns' manor, a re-run of  airs, in which Krusty announces that Argentina has the Falkland Islands.

was proposed as an Olympics host city, and Argentina was represented at the International Olympics Committee meeting, along with France, Germany, Japan, Mongolia, Poland, Russia, Saudi Arabia and Switzerland.

When saying goodbye to the beached whale, Bluella, Lisa says "send me a postcard from ".

Non-canon
When world peace is declared, the UN representatives of Argentina and England hug, with the former saying "we kinda knew they were yours", a reference to the Falkland Islands.

Behind the Laughter

 * The segment of "Bart vs. Australia" involving Adolf Hitler refers to a conspiracy theory that he survived World War II and escaped to Argentina. Had Hitler indeed survived, he would have been 105 years of age at the time the episode aired.

Trivia
Rosarita, the tango teacher Bart has a lesson with, appears to be Argentinian.