The euro gained on Monday after France's snap election put the far-right in the lead, albeit with a smaller margin than expected. Marine Le Pen's National Rally performed worse than anticipated, easing fears of expansionary fiscal policies. The euro rose 0.4% to $1.0756, while the yen struggled near a 38-year low. The dollar index fell as U.S. inflation data bolstered expectations of a Federal Reserve rate cut. Other currencies, including sterling and the New Zealand dollar, saw modest gains.