According to various sources, here are some estimates of the total cost of World War I in dollars:
1. United States: The U.S. entered the war in 1917 and spent approximately $32 billion (equivalent to about $480 billion in 2021) on war-related expenses.
2. France: France was one of the most affected countries and incurred significant costs during World War I. Estimates suggest that France spent around 220 billion French francs (equivalent to approximately $530 billion in 2021) on war-related expenditures.
3. United Kingdom: The British government spent approximately £9 billion (equivalent to around $630 billion in 2021) on war expenses during World War I.
4. German Empire: Germany's war costs are estimated to have been around 165 billion marks (equivalent to about $330 billion in 2021).
5. Russia: The Russian Empire spent an estimated 33 billion rubles (equivalent to about $190 billion in 2021) on World War I.
It's important to note that these figures are estimates and may vary based on different sources and methodologies. Furthermore, the economic impact of World War I extended beyond the immediate costs of the war and affected global trade, production, and financial stability for years.