1) Budapest, Hungary
2) New Delhi, India
3) Beijing, China
4) Warsaw, Poland
Explanation:
The second edition of Belt and Road Forum (BRF) was held in Beijing, China from April 25th to April 27th, 2019 in which 37 heads-of-state had participated along with United Nations Secretary-General Antonio Guterres and International Monetary Chief (IMF) Christine Lagarde.The Belt and Road Forum is a part of the Belt and Road Initiative (BRI). The idea of BRI was first proposed by Chinese President Xi Jinping in 2013.