The Oldest Country in the World

La Rocca tower in the foreground is the oldest of three guard towers that overlook the city and independent country of San Marino.
Maremagnum / Getty Images

What is the oldest country in the world? Empires existed in ancient China, Japan, Iran (Persia), Greece, Rome, Egypt, Korea, Mexico, and India, to name a few. However, these empires largely consisted of an agglomeration of city-states or fiefdoms and were not the equivalent of the modern nation-state, which emerged in the 19th-century

The following three countries are most often cited as being the world's oldest:

San Marino

By many accounts, The Republic of San Marino, one of the world's smallest countries, is the world's oldest country. San Marino, which is completely surrounded by Italy, was founded on Sept. 3 in the year 301 B.C. However,  it wasn't recognized as independent until 1631 A.D. by the pope, who at that time controlled much of central Italy politically. San Marino's Constitution is the world's oldest, having been first written in the year 1600 A.D. 

Japan 

According to Japanese history, the country's first emperor, Emperor Jimmu, founded Japan in 660 B.C. However, it was not until at least the 8th century A.D. that Japanese culture and Buddhism spread across the islands. Over its long history, Japan has had many different types of governments and leaders. While the country celebrates 660 B.C. as the year of its founding, it wasn't until the Meiji Restoration of 1868 that modern Japan emerged.

China

The first recorded dynasty in Chinese history existed more than 3,500 years ago when the feudal Shang dynasty ruled from the 17th century B.C. to the 11th century B.C. However, China celebrates 221 B.C. as the founding of the modern country, the year Qin Shi Huang proclaimed himself the first emperor of China.

In the 3rd century A.D., the Han dynasty unified Chinese culture and tradition. In the 13th century, the Mongols invaded China, decimating the population and culture. China's Qing Dynasty was overthrown during a revolution in 1912, leading to the creation of the Republic of China. However, in 1949 the Republic of China itself was overthrown by Mao Tse Tung's communist rebels, and the People's Republic of China was created. It exists to this day.

Other Contenders

Modern countries such as Egypt, Iraq, Iran, Greece, and India, bear little resemblance to their ancient counterparts. All of these countries except Iran trace their modern roots only as far back as the 19th century. Iran traces its modern independence to 1501, with the founding of the Shia Islamic state.

Other countries that consider their founding to be prior to Iran's include France (843 A.D.), Austria (976 A.D.), Hungary (1001 A.D.), Portugal (1143 A.D.), Mongolia (1206 A.D.), Thailand (1238 A.D.), Andorra (1278 A.D.) and Switzerland (1291 A.D.). All of these countries have a long and impressive history, which allows them to maintain their place as some of the oldest nation-states on the planet.

Ultimately, it is difficult to judge which country is the world's oldest due to a variety of complex factors, but you could easily argue for San Marino, Japan or China and be considered right.