Mosaku is a location in Just Cause 4: Sakaku.
City blueprints reveal:
Mosaku was one of the most prosperous cities in Sakaku during the Cold War. In part, this was because of the similar naming to Moscow, but there was also a lot of construction in this city for some unknown reason. Today, the construction continues under the CLA authorities, but now Mosaku's growth has slowed to a crawl. Food and water are sufficient.