There are all kinds of countries in the world, both large and small, and those large countries, with just one local administrative region under their jurisdiction, have enough economic aggregate to rival many countries.
United States: California (hereinafter referred to as California)
With an area of 423,970 square kilometers, California is the most populous of the 50 states in the United States and the largest in terms of economic aggregate.
In 2023, California's GDP totaled $3.9 trillion, accounting for about 14.6% of the total GDP of the United States. If you look at it as a country, California has the fifth-largest GDP in the world after the United States, China, Japan and Germany.
California's economy is growing rapidly, and some predict that California's total GDP is likely to surpass that of Germany and Japan in the next two years.
The big cities of Los Angeles, San Francisco and San Diego are all located in California, and the 2028 Olympics will return to Los Angeles, California.
Los Angeles
China: Guangdong Province
With an area of about 180,000 square kilometers, Guangdong Province is the province with the largest Chinese population, with a population of more than 120 million.
In 2023, Guangdong's GDP will reach 13.57 trillion yuan (about 1.8 trillion U.S. dollars), accounting for about 10% of the country's total, ranking first in the country for 35 consecutive years. Two of China's four major first-tier cities are located in Guangdong.
Germany: North Rhine-Westphalia (NRW)
The state covers an area of about 34,000 square kilometers and has a population of 18 million.
There are 71 large cities in Germany with more than 100,000 people, 30 of which are located in the state.
The famous Ruhr industrial area is located in Honcanu.
In 2017, North Rhine-Westphalia GDP8290 billion US dollars, accounting for 20.53% of Germany's total GDP.
Cologne in North Rhine-Westphalia
Japan: 东京都
Tokyo covers an area of only 2,194 square kilometers, accounting for 0.6% of Japan's land area, with a population of about 14 million.
In 2022, Tokyo's GDP reached $1.06 trillion, accounting for 20.7% of Japan's total GDP.
India: Maharashtra
Maharashtra is located on the west coast of India with an area of about 308,000 square kilometers and a population of 130 million.
Apart from Mumbai, a cosmopolitan megacity with a population of more than 20 million, the state also has two cities in Pune and Nagpur with a population of more than 2.5 million.
It is home to the world's largest diamond trading center and is the home base of Bollywood.
In 2022, Maharashtra's GDP was about $420 billion, accounting for about 12% of India's total GDP.
Bombay
United Kingdom: England
The name England is derived from England, and although the mainland contains four parts, Scotland, Wales and Northern Ireland have a relatively low presence as if they were vassal states of England. Regardless of population, size, or economic power, England dominates.
England covers an area of about 130,000 square kilometers, accounting for 53% of the total area of the United Kingdom, concentrating 84.3% of the population of the United Kingdom, with a total GDP of 2,268.245 billion US dollars in 2017, accounting for about 85% of the total GDP of the United Kingdom.
London
France: Île-de-France
France is divided into 22 regions, and Île-de-France is the most important region in France and the richest region in Europe.
The Île-de-France region covers an area of 12,000 square kilometers and has a population of about 12 million. In 2021, the region's GDP was about 760 billion euros (about 800 billion US dollars), accounting for 27% of the country's GDP.
Italy: Lombardy
The Lombardy region borders Switzerland, with an area of 23,800 square kilometers and a population of about 10 million, with its capital in Milan.
The Milan metropolitan area is one of the three largest metropolitan areas in Europe and one of the most economically developed regions in Europe.
In 2017, the GDP was about 416.2 billion US dollars, accounting for 20% of Italy's total GDP.
Milan
Canada: Ontario
The province covers an area of 1.068 million square kilometers and has a population of 13.45 million (2016), accounting for 38.26% of the country's total population.
Canada's capital, Ottawa, and Toronto, the largest city, are in the province.
In 2021, Ontario's GDP reached US$763.213 billion, accounting for 38.12% of the country's total GDP.
Toronto
Russia: Central Federal District
The Central Federal District covers an area of 650,000 square kilometers, which is 3.8% of the total territory of Russia and has a population of more than 40 million (2022).
In 2017, GDP totaled $413.14 billion, which is 26% of the total economy of Russia.