Some of the key developments in Indian politics after the landmark elections of 2019 include:

• Scrapping of Article 370 of the Indian constitution that provided special status to Jammu and Kashmir.
• Passing of Citizenship Amendment Act (CAA) that led to countrywide protests and criticism for being discriminatory towards Muslims.
• Delhi communal riots in February 2020, causing the loss of lives and property damage.
• COVID-19 pandemic hit India in early 2020 and remains a challenging situation to date.
• Bihar Assembly elections held in November 2020, in which the ruling party, BJP, emerged as the biggest vote-getter.
• Farmer's protests against the newly enacted farm laws have been ongoing since November 2020 and remain unresolved.

The impact of these events on social, economic, and international affairs has been significant. The scrapping of Article 370 was a decisive move and led to heightened tensions in the region. The CAA created unrest and led to widespread protests, raising concerns about inclusivity and secularism in India. Delhi riots and the COVID-19 pandemic exposed the lack of preparedness and highlighted the need for better governance and healthcare infrastructure. The Bihar assembly elections showed the continuing support for the ruling party despite criticism. The farmer's protests remain a contentious issue, with the potential to impact India's farm sector and international trade.