Great wall
China – The Great Wall of China: “Great Wall of China.” Encyclopædia Britannica, Encyclopædia Britannica, Inc., 15 Mar. 2025, www.britannica.com/topic/Great-Wall-of-China. . Accessed 15 Apr. 2025.
Japan G cans
Japan – Tokyo G-Cans (Metropolitan Area Outer Underground Discharge Channel): “Metropolitan Area Outer Underground Discharge Channel.” Wikipedia: The Free Encyclopedia, Wikimedia Foundation, 14 Mar. 2025, en.wikipedia.org/wiki/Metropolitan_Area_Outer_Underground_Discharge_Channel. . Accessed 15 Apr. 2025.