By roughly how much did the Uruguay Round reduce tariffs worldwide?

1. The Uruguay Round was the most ambitious global trade agreement ever negotiated. 2. It reduced tariffs by one-third worldwide. 3. That reduction was expected to increase global income substantially each year. 4. Lower tariffs raise global income because they let comparative advantage work more freely. 5. The other three fractions overstate or understate the cut. 6. The size of the cut is what makes the round the reference point for later negotiations. _Source: OpenStax Introduction to Business (CC BY 4.0), Ch 3 "Competing in the Global Marketplace", section 3.4 Fostering Global Trade_