Lawmakers approved legislation on Thursday which will allow Britain to leave the European Union on Jan. 31 with an exit deal, ending more than three years of tumult over the terms of the unprecedented divorce. They voted 330 to 231 in favor of the European Union (Withdrawal Agreement) Bill, which implements an exit deal agreed with the EU last year. That allows Prime Minister Boris Johnson to turn the page on one of Britain’s deepest political crises in decades, putting an end to the fears of an immediate disorderly exit which had cast a shadow over the economy and fueled...