The 18th G20 Summit was hosted by India in 2023 under the theme "Vasudhaiva Kutumbakam" (One Earth, One Family, One Future). Key details:
- Dates: 9-10 September 2023
- Location: New Delhi
- Significance: First G20 presidency for India, focusing on climate action, inclusive growth, and digital transformation.
While China, Singapore, and Pakistan have hosted international events, India was the official host for G20 2023.
Thus, the correct answer is (1) India.