French Empire: The French Empire was the second largest empire in the world at the time of World War I, covering a total area of 10.6 million square kilometers (4.1 million square miles) and a population of approximately 110 million people. The French Empire included territories in Africa, Asia, the Americas, and Oceania, as well as numerous islands in the Atlantic, Indian, and Pacific Oceans.
Russian Empire: The Russian Empire was the third largest empire in the world at the time of World War I, covering a total area of 21.8 million square kilometers (8.4 million square miles) and a population of approximately 175 million people. The Russian Empire included territories in Europe, Asia, and North America, as well as numerous islands in the Arctic Ocean.
German Empire: The German Empire was the fourth largest empire in the world at the time of World War I, covering a total area of 3.2 million square kilometers (1.2 million square miles) and a population of approximately 67 million people. The German Empire included territories in Europe, Africa, Asia, and Oceania, as well as numerous islands in the Atlantic, Indian, and Pacific Oceans.
Ottoman Empire: The Ottoman Empire was the fifth largest empire in the world at the time of World War I, covering a total area of 5.2 million square kilometers (2 million square miles) and a population of approximately 24 million people. The Ottoman Empire included territories in Europe, Asia, and Africa, as well as numerous islands in the Mediterranean Sea.
These five empires were the largest empires in the world at the time of World War I, and they played a major role in the conflict. The war was fought over a variety of issues, including territorial disputes, economic rivalries, and political ideologies. The war resulted in the collapse of the Ottoman Empire and the German Empire, and it led to the creation of new nation-states in Europe and the Middle East.