European Commission President Romano Prodi warned Britain on Feb 15, 2001 it would lose control over its economy if it remained outside the euro. Challenging the widespread fear in Britain that signing up to the euro would entail a major surrender of sovereignty, Prodi said the opposite was true. By staying outside the 12-nation euro zone Britain would sacrifice its influence, he said. "How can you control your economy, surrounded by the euro and not having your man in the European Central Bank