China was the main one. The Inca and Aztec Empires were two others. Europe did not begin overseas empire-building until the 1500's, although the Holy Roman Empire continued in name until 1805 until abolished by Napoleon. There may have been others. Russia was certainly a major power not to be fooled with in 1400, and perhaps Austria and England too, but not really empires yet. A lot depends on your definition. The fall of the Byzantine (Eastern Roman) Empire did not take place until 1453, but the Ottoman (Turkish) Empire which would replace them and rename the city Istanbul were certainly more dominant in the year 1400.
The Ottoman Empire's dominant period was 1400-1918.
In the 1400's West Africa had been the home of several West African empires. Some historians use the term Mali Empire to designate the Islamic empires of the 1400's. Power changed hands several times in the 14th and 15th centuries. These empires' wealth came from gold.
Mexico: Aztecs, Mayans Peru: Incas
Arabic became the dominant language throughout the early Islamic Empires as they were founded by Arabic speakers.
They allowed Europeans to communicate easily across different parts of international empires.
The language spoken in the Persian empires was Old Persian. It was the administrative language of the Achaemenid Empire and the Persian language used in official inscriptions and documents. Later, under the Sassanian Empire, Middle Persian became the dominant language.
16% of 1400 = 16% * 1400 = 0.16 * 1400 = 224
30% of 1400= 30% * 1400= 0.3 * 1400= 420420
29% of 1400= 29% * 1400= 0.29 * 1400= 406
80 percent of 1400 = 1120 80% of 1400 = 80% * 1400 = 80%/100% * 1400 = 1120
1400
0.30% of $1400= 0.30% * $1400= 0.003 * $1400= $82.56