Simplify the following text for a Grade 7 native English-speaking person.
Original: After having a controversy about Ulleungdo , the JapanÂ s feudal government ; the shogunate banned Japanese to go to Ulleungdo . In 1787 , The LaPerouse Expedition Party of France measured the Ulleungdo at first time and they called the Ulleungdo Dagelet .
Simplified: Ulleungdo is a popular tourist site .