The Euro currency was introduced and adopted by 11 Member States.
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Estonia joined the Eurozone and adopted the Euro as its currency.
The Union Jack flag was flown for the first time in Dublin, Ireland, to commemorate the union between Great Britain and Ireland.
The dwarf planet Ceres was discovered by an Italian monk called Giuseppe Piazzi.
America banned all advertisements of cigarettes on TV and radio.
Romania and Bulgaria joined the European Union.
