https://www.eurogamer.net/articles/2018-10-09-planet-coaster-gets-some-international-flair-in-the-upcoming-worlds-fair-expansion
Eurogamer list these countries:
The World's Fair Pack takes Frontier's theme park sim on a globe-hopping tour of ten different countries. The result is a brand-new collection of over 360 building and scenery items - including shops, restaurants, and billboards - inspired by the UK, France, Italy, Spain, Germany, Japan, Mexico, Morocco, China, and the USA. Ideal if you fancy attempting to build your own version of Disney's Epcot or, you know, the world.
http://sknr.net/2018/10/09/planet-coasters-new-worlds-fair-pack/
300 building items and more than 60 scenery items to create an immersive park packed with atmosphere.
Although I am eager to work with the Moroccan set, I would have liked a greater variety of African countries. Egypt, Sudan, Ethiopia, Mali, and Zimbabwe in particular are known for very distinctive indigenous architectural traditions. Plus, we might get African wildlife animatronics for our safari rides!