Possible Clues:

• Mimosa ultimately is a shrub raised in a large part of the world
• Large amount of earth is turned over in area contaminated with uranium
• Very large landmass
• Vast extent of land area is lost without uranium
• We hear you're on the largest continent — it's even bigger than that!
• Turkiye's place
• Armenia is part of it
• Land mass formed by two continents
• Are in conflict with USA over one geographical area
• Big area has a little grandeur, as I anticipated