tutor2u Economics on Instagram: "Currency wars, also known as competitive devaluations, are an important issue in A-level international economics. In this short video, we explain what a currency war is and why countries deliberately weaken their exchange rates to gain a trade advantage. You’ll explore why competitive devaluation is described as a zero-sum game and how it can trigger retaliation and global instability. Using a real-world case study from Brazil following US quantitative easing aft