(BUSINESS WIRE)--The United States of America has signed its Participation Contract for Expo 2030 Riyadh, marking a significant milestone in the World Expo’s preparations and further strengthening the momentum for international participation in the global event. The signing marks an important step in the United States’ journey towards Expo 2030 Riyadh, paving the way for the development of its pavilion, programming and visitor experience. It also reinforces the growing international commitment to Expo 2030 Riyadh, as countries move from confirming their participation to actively shaping the experiences, ideas and innovations they will bring to the Kingdom in 2030. The Participation Contract was signed by His Highness Prince Faisal bin Farhan Al Saud, Minister of Foreign Affairs of the Kingdom of Saudi Arabia, and U.S. Secretary of State Marco Rubio, during a bilateral meeting held on the sidelines of the 2026 G20 Foreign Ministers’ Meeting in Atlanta, Georgia. The signing ceremony was attended by Her Royal Highness Princess Reema bint Bandar bin Sultan bin Abdulaziz Al-Saud, Ambassador of the Kingdom of Saudi Arabia to the United States, and Talal Al-Marri, ...