The year 2020 became a real challenge for the tourism industry. The travel and tourism sector suffered the most from the closure of borders between countries, the introduction of quarantine for visitors, and restrictions on public services. The COVID-19 pandemic changed the way people spend leisure time. In order to keep up, the tourism industry has no other choice but to play by new rules
图片新闻: Hidden secrets of US dollar bills
The US dollar is the most popular and powerful currency in the world. All other currencies are quoted against it. All changes in its value have an immediate influence on other monetary units. The greenback celebrates its birthday on April 1. It became the US national currency on July 6, 1785. Let's find out other interesting facts about the US dollar in our photo gallery.