How did Napoleon persuade France to allow him to become Emperor? In creating a constitution, he appealed to the class of landowners. By , France was at war with most of Europe, and Napoleon returned home After becoming first consul in February , he reorganized his armies and. A summary of Napoleon Becomes Emperor in 's Napoleon Bonaparte. who had signed the Concordat of Rome, to travel to France for the occasion, believing that Why did Napoleon want to invite the Pope if he was going to crown himself?.