By the Numbers in 1915
World Population
—
UK Life Expectancy
49.3 years
US Life Expectancy
50.3 years
Gold Price (per oz)
$20.67
Dow Jones Index
81
US National Debt
—
Sovereign Nations
53
How Much Did Things Cost in 1915?
| Item | UK | US |
|---|---|---|
| Average house price | £270 | $3,300 |
| Average salary | £78 | $610 |
| Pint of milk | 2½d | 7¢ |
| Loaf of bread | 3d | 7¢ |
| Dozen eggs | 1s 4d | 36¢ |
| Pint of beer | 3d | 5¢ |
Technology and Inventions in 1915
The war drove rapid technological development. Poison gas was used for the first time at Ypres. Tanks were being developed in secret. Aircraft were evolving from observers to fighters with synchronised machine guns. Telephone networks expanded to coordinate military operations.
- ● Germany deployed chlorine gas at the Second Battle of Ypres — the first large-scale chemical weapon attack
- ● The first fighter aircraft with a synchronised machine gun entered service
- ● Einstein published his General Theory of Relativity
- ● The first transcontinental telephone call made from New York to San Francisco
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