Listed alphabetically below are the world flags for twenty-five of the most populous countries.

Afghanistan

Afghanistan  was founded in 1747.

Algeria

Algeria  earned independence from France in 1962.

Argentina

Argentina  declared independence from Spain in 1816.

Bangladesh

In 1971, East Pakistan separated from West Pakistan to become  Bangladesh

Brazil

Brazil  declared independence from Portugal in 1822.

Canada

In 1867, Canada  began governing itself, but it still has political ties to the United Kingdom.

China

The first Chinese dynasty was established around 2100 BCE.

Colombia

Columbia  separated from Gran Columbia in 1830.

Democratic Republic of Congo

In 1960, the Democratic Republic of Congo  declared independence from Belgium.

Egypt

The kingdom of Egypt  was established in 3200 BCE. Modern Egypt declared independence from the United Kingdom in 1952.

Ethiopia

The kingdom of Ethiopia  was established around 980 BCE.

France

The French flag  was designed around 1790.

Germany

In 1990, East and West Germany  rejoined to create a unified state.

Ghana

Ghana  earned its independence from Great Britain in 1957.

India

Indian  culture began in approximately 1500 BCE.

Indonesia

Indonesia  was colonized by the Dutch early in the 17th century.

Iran

Until 1935, the area currently known as Iran  was known as Persia.

Iraq

Iraq  was originally part of the Ottoman Empire.

Italy

In 1861, Italy  became a nation state.

Japan

Japan  celebrates National Foundation Day as February 11, 660 BCE.

Kenya

Kenya

Malaysia

Malaysia was formed in 1963.

Mexico

Mexico  declared independence from Spain in 1816.

Morocco

Morocco  declared independence from France in 1956.

United States

The United States of America  became an independent nation in 1776.