I got a bit carried away and finished off the rest of the world. I also added some environment ornaments to make it more appealing to look at, as well as labels that show the names of all the countries/unions. I will have to play with sizing and fading for actual gameplay, but for now you can see what countries have been included on their own, and which ones needed to be combined together.

Here is what was added to Europe, Asia, and Oceania:

Afghanistan

"Alpine Union" - Hungary, Slovakia, Czech, Austria, Slovenia, and Switzerland. Named after the mountainous region these countries occupy. Represented by the Swiss Flag.

"Balkan Union" - Albania, North Macedonia, Serbia, Kosovo, Montenegro, Bosnia and Herzegovina, and Croatia. Named after the Balkan peninsula. Represented by the Flag of Bosnia and Herzegovina.

"Baltic Union" - Estonia, Latvia, Lithuania, and Belarus. Named after the Baltic Sea. Represented by the Lithuanian Flag.

"Caucasus Union" - Georgia, Armenia, and Azerbaijan. Named after the region they occupy. Represented by the Azerbaijan Flag.

Finland

"Hellenic Union" - Greece and Cyprus. Named after the word that means "Things that are Greek". Represented by the Greek flag.

"Himalayan Union" - Nepal, Bhutan, and Bangladesh. Named after the Himalayas that occupy most of these countries. Represented by the Bangladesh Flag.

Iceland

Iraq

Ireland

"Laccadive Union" - Sri Lanka, Maldives, and Chagos Archipelago. Named after the Laccadive sea that these islands occupy. Represented by the Sri Lankan Flag.

"Levant Union" - Syria, Jordan, Israel, Palestine, and Lebanon. Named after the geographically neutral name for the area. Represented by the Lebanese Flag.

Malaysia

"Mekong River Union" - Laos, Vietnam, and Cambodia. Named after the Mekong river that flows through the area. Represented by the Laotian Flag.

Myanmar

"North Sea Union" - Denmark, Faroe Islands, Netherlands, Belgium, and Luxembourg. Named after their geography. Represented by the Netherlands Flag.

Norway

Oman

"Pamir Union" - Tajikistan, and Kyrgyzstan. Named after the Pamir mountains in the region. Represented by the Kyrgyzstan Flag.

"Persian Gulf Union" - Kuwait, Bahrain, Qatar, and United Arab Emirates. Named after the gulf that all of these countries are connected to. Represented by the United Arab Emirates Flag.

Philippines

Portugal

"Romanian Union" - Moldova, Romania, and Bulgaria. Named after the Romanian language Moldova and Romania speak. Represented by the Bulgarian Flag. (I was originally going to use the Romainian flag, but to the naked eye it is indistinguishable from the Chad Flag.)

Taiwan

Turkmenistan

Uzbekistan

Yemen

"Coral Sea Union" - Solomon Islands, Vanuatu, Figi, and New Caledonia - Named after the commonly accepted name for the area. Represented by the Vanuatu Flag.'

French Polynesia

"Micronesian Union" - Micronesia, Marshall Island, Northern Mariana Islands, Nauru, Guam, and Palau - Named after the commonly accepted name for this group of islands. Represented by the Micronesian Flag.

New Zealand

Papua New Guinea

"Polynesian Union" - Cook Islands, Samoa, Tokelau, Tonga, and Tuvalu. Named after the commonly accepted name for the area. Usually French Polynesia and New Zealand are a part of this group, but I wanted to separate them out. Represented by the Samoan Flag

Lastly...

Antarctica - There are lots of rules in real life about what is allowed to be built on Antarctica. Needless to say, it will take quite a lot of influence to start exploiting Antarctica's resources.