England instead of the United Kingdom is shown on the Security Council of the model UN.
In the security council of Model United Nations, only China, France, Russia, The UK, and the USA are the only countries allowed to declare war.
In the first scene, where all the flags are on the table and shelves, the flag of Newfoundland and Labrador can be seen toward the center of the table. Newfoundland and Labrador is a Province of Canada and not a country. Though the flag of Newfoundland and Labrador was designed by a local artist named Christopher Pratt. Which may be why it was added.
The flag of Vietnam was wrong, they used the South Vietnam's flag.
At the beginning of the episode when Tom is talking to Ron, the phone screen on his iPhone is visible. When he turns around, the phone turns as well, and the phone call screen flips. When in a call, the screen turns itself off due to the proximity sensor. This means that the image is an image of a phone call.