To determine which countries spent the most on the war from the Allied and Central Powers, we need to analyze the given data.
### Step-by-Step Solution
1. Identify the War Spending Data:
- United Kingdom: $39.9 billion
- France: $24.3 billion
- Russia: $22.6 billion
- Germany: $37.7 billion
- United States: $22.6 billion
2. Identify Two Groups of Countries:
- Allied Countries: United Kingdom, France, Russia, and United States
- Central Powers Countries: Germany
3. Find the Country with the Maximum Spending among the Allied Countries:
- Compare the spending of the Allied countries:
- United Kingdom: $39.9 billion
- France: $24.3 billion
- Russia: $22.6 billion
- United States: $22.6 billion
- The United Kingdom has the highest spending among the Allied countries with $39.9 billion.
4. Find the Country with the Maximum Spending among the Central Powers Countries:
- There is only one Central Powers country listed: Germany.
- Germany’s spending is $37.7 billion, making it the highest by default among the Central Powers.
### Conclusion
- Maximum Spending among Allied Countries: The United Kingdom with $39.9 billion.
- Maximum Spending among Central Powers Countries: Germany with $37.7 billion.
Therefore, the correct answer is:
Allied: the United Kingdom; Central Powers: Germany.
