Federal Republic combining the former nations of Japan, the Phillipines, Micronesia and other South Pacific Islands with the Sehel Province of Africa.
The Japanese mainland suffered tremendously at the mainland conflicts sparked in the first decade of the Eco-Crisis as poisons wiped out fish stocks in the Sea of Japan and the Yellow sea. Disaster further struck as the tides rose and much of the lowlands were swamped starving the nation. What were at the time considered the final blows came with a spate of reactivating volcanoes and earthquakes resulting in Trillions of dollars damage.
Salvation came from most unlikely of places. Japanese technologist looking for ways to harvest sufficient food stocks from their flooded and damaged lowlands happened upon terraforming techniques for converting desert wastelands to productive ecosystems, concepts completely useless to the mainland crisis but ideally suited to the areas of Africa worst hit during the 2180 Humanitarian Crisis on that continent.
In cooperation with the resurging Great Britain both countries undertook mass terraforming projects across the Sahara benefiting greatly from the desperate grasp and creating new pastures from wasteland. The economic and ecological benefits of these actions provided Japan with the relief it needed, the mission it required and African nations spread from the west coast and deep across the Sahel region of the Sahara with the future they deserved.
Internation Treaties of the late 21st Century required equal status of dependacies which Japan was more than willing to grant to Sahel. The Sahelese, prosperous under this partnership have also embrased their place in the Nippon Federation as a principle supplier of primary resources.
During this time Japan entered into economic partnerships with the Phillipines and other South Pacific island nations. When Japan undertook formalization of the Sahel union they extended the same opportunity to the Phillipines and other island nations who initially refused but later accepted when New Zealand began expressing it's imperial intentions throughout the South Pacific.
HIGHEST POPULATION BEFORE ECO-CRISIS: 507,513,495
LOWEST POPULATION DURING ECO-CRISIS: 142,435,856
POPULATION (AS AT LATEST CENSUS): 275,678,190
ASIA and SOUTH PACIFIC (not including Sahel)
HIGHEST POPULATION BEFORE ECO-CRISIS: 269,663,049
LOWEST POPULATION DURING ECO-CRISIS: 82,973,245
POPULATION (AS AT LATEST CENSUS): 128,410,975
SAHEL REGION (AFRICA)
HIGHEST POPULATION BEFORE ECO-CRISIS: 237,850,446
LOWEST POPULATION DURING ECO-CRISIS: 59,462,611
POPULATION (AS AT LATEST CENSUS): 147,267,215
PER CENT NEW TO REGION (AS AT LATEST CENSUS): 62 %