21st-century introductions -
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21st-century introductions - Subtopics
21st-century neologisms
2000s introductions
2010s introductions
2020s introductions
21st-century inventions
Amusement park attractions introduced in the 21st century
21st-century ballet premieres
21st-century board games
Camera lenses introduced in the 21st century
Cameras introduced in the 21st century
21st-century comics debuts
Computer-related introductions in the 21st century
Fictional characters introduced in the 21st century
Fictional elements introduced in the 21st century
Food and drink introduced in the 21st century
Mass media franchises introduced in the 21st century
Mobile phones introduced in the 21st century
Products introduced in the 21st century
Publications established in the 21st century
21st-century software