Luxembourg declares independence after four years of German occupation in World I.
Luxembourg joins the League of Nations.
Luxembourg and Belgium join in an economic union, in which both countries use Belgium's currency.
Luxembourg is once more occupied by German troops during World War II.
Luxembourg becomes a member of the North Atlantic Treaty Organizations (NATO).
Luxembourg becomes a founding member of the European Economic Community, which aims to integrate the economy in Europe among its member states.
Following the crisis of the metallurgy sector, Luxembourg enters a period of recession.
Luxembourg takes part in the Maastricht Treaty creating the European Union (EU).
Luxembourg adopts the euro currency.
Luxembourg is added to a "grey list" of countries with questionable banking arrangements by G20, which is an international forum for the governments and central bank governors from 20 major economies.