As of 31 March this year, Romania and Bulgaria will join the Schengen zone, which allows free movement between member states for 400 million citizens. The two countries have been members of the European Union (EU) since 2007 but as they were not part of the border-free area, travellers were still required to show passports upon entry. In 2024, border controls for the two countries will be simplified. Here’s what travellers to Romania and Bulgaria need to know about the changes. Do you need a passport to enter Romania and Bulgaria?When Romania and Bulgaria join the Schengen zone this year, it w…