Leap years occur every 4 years on years divisible by 4 (e.g., 2020, 2024, 2028).

While ethnic demographics in Afghanistan can be subject to varying estimates, Tajiks are generally considered the second-largest ethnic group after Pashtuns [2, p26]. They predominantly speak Dari (a dialect of Persian) and are concentrated in the northern and western regions of the country, as well as in urban centers like Kabul.

The first commitment period of the Kyoto Protocol, an international treaty aimed at reducing greenhouse gas emissions, was scheduled to end on December 31, 2012 [2, p22]. Subsequent discussions and amendments (like the Doha Amendment) extended commitments for some parties, but the initial period concluded in 2012. The Paris Agreement, adopted in 2015, has since become the primary international framework for climate action post-2020.

Completed around 1010 CE by the poet Hakim Abul-Qasim Mansur (Ferdausi Tusi), the “Shahnameh” chronicles Persian legends and history from mythical times to the Arab conquest, preserving pre-Islamic Iranian culture.

Before the UK’s withdrawal in 2020, the European Union comprised 28 member states.[5](https://www.jworldtimes.com/old-site/css-exclusive/css-special/css-2017-solved-papers-current-affairs-mcqs/)

Tokyo was awarded the 2020 Summer Olympics at the 125th IOC Session in Buenos Aires in 2013.

Qasem Soleimani, commander of Iran’s Quds Force, was assassinated by a US drone strike near Baghdad International Airport on 3 January 2020[21](https://en.wikipedia.org/wiki/QasemSoleimani).

The UN Human Rights Council comprises 47 member states elected by the General Assembly for staggered three-year terms[13](https://www.un.org/pga/75/wp-content/uploads/sites/100/2020/10/HRC-ELECTION-RESULTS.pdf).

The United States held its 2020 presidential election on Tuesday, 3 November 2020[11](https://www.270towin.com/2020-election/).

Prior to North Macedonia’s accession in March 2020, NATO comprised 29 member states.