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The First World and the Second World were competing for political and economic influence over developing nations known as the Third World. The Human Development Index is an index used to rank countries and is quantified by looking at a country's human development such as life expectancy, education, and per capita income indicators. The scale is ...
Almost every country in the world participated in World War II.Most were neutral at the beginning, but only a relative few nations remained neutral to the end. The Second World War pitted two alliances against each other, the Axis powers and the Allied powers.
World War II [b] or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all the world's countries—including all the great powers—participated, with many investing all available economic, industrial, and scientific capabilities in pursuit of total war, blurring the distinction between military and ...
The Soviet Union was the second nation to have developed and tested a nuclear weapon. It tested its first megaton-range hydrogen bomb (" RDS-37 ") in 1955. The Soviet Union also tested the most powerful explosive ever detonated by humans, (" Tsar Bomba "), with a theoretical yield of 100 megatons, reduced to 50 when detonated.
World War II deaths by country World War II deaths by theater. World War II was the deadliest military conflict in history.An estimated total of 70–85 million people perished, or about 3% of the estimated global population of 2.3 billion in 1940. [1]
As military forces around the world are constantly changing in size, no definitive list can ever be compiled. All of the 172 countries listed here, especially those with the highest number of total soldiers such as the two Koreas and Vietnam , include a large number of paramilitaries, civilians and policemen in their reserve personnel.
The following is a list providing an overview of sovereign states around the world with information on their status and recognition of their sovereignty. The 205 listed states can be divided into three categories based on membership within the United Nations System : 193 UN member states , [ 1 ] two UN General Assembly non-member observer ...
This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present.