A fiat peg is a commitment to hold a token's price to a national currency: one token, one unit, maintained by reserves and redemption. The peg turns a currency's stability into a blockchain property, which is why every major currency now has tokens tracking it.
Pegs differ in discipline: reserve-backed stablecoins redeem on demand; algorithmic schemes (the ones that failed) relied on incentives. The listed question on U.CASH is always who redeems, for what, under whose regulator.
Nineteen currencies have pegged tokens on U.CASH, from the dollar's ten to single-issuer currencies like TRYB and ZARsc. Every currency page lists its pegs with issuers; every asset page names the regulator.
Every term behind the rails, the assets, and the settlement.