The recent evolution of the parity between the two major international currencies, the dollar and the euro, is full of lessons and will not be without consequences on the French economy. The euro remained stable against the dollar during almost two years, if we exclude a short period of doubt in November 2015. It fluctuated between 1.10 and 1.15. American elections approaching and the narrowing of the gap between the democrat candidate and Donald Trump generated a rise of the dollar. It reached 1.05$ against the euro, its highest level for 20 years, shortly after the election ...