1. Russia secretly had maps so detailed of the Canadian Arctic during the Cold-War that other ships even now use them over official maps.
2. In the 1930’s starlet Hedy Lamarr invented a new technology to stop Nazi’s from jamming Navy torpedoes, but the idea was rejected until 1962 and implemented during the Cold War. Her frequency hopping technology is also the basis for modern Bluetooth.
3. During the Cold War, the USSR was able to tell a Soviet passport was a forged and fake because the staples in real passports would corrode due to the poor quality of metal.
That statement is true.
To be precise, the united states coined both gold and silver in 1873. Before this, gold is the only material that is used to create coin money.
But the cost of production to produce gold coin is really high. Because of this, the government decided to include silver in order to drive the cost of production down in 1973.
US supreme court is one, US court of appeals, and US district courts
A Native American uses a rifle to hunt buffalo (B). Before the Columbian Exchange, no modern weapons reached the Americas. Natives hunted with the tools and techniques they had been using for hundreds of years.
