Answer:
Hydraulic mining developed from ancient Roman techniques that used water to excavate soft underground deposits. Its modern form, using pressurized water jets produced by a nozzle called a "monitor", came about in the 1850s during the California Gold Rush in the United States.
Explanation:
After the First World War the poppy was adopted as a symbol of Remembrance
Answer:
Colonists were unprepared for the constant challenges they faced: drought, starvation, the threat of attack, and disease. With the help of stern leadership and a lucrative cash crop, the colony eventually succeeded.
Answer:
D. provided jobs and helped Germany out of the Depression
Explanation:
Shortly after World War 1 and the signing of the treaty of Versailles, Adolf Hitler engaged in a subtle rearmament of his soldiers. He disguised the project of rebuilding the German army because he was clearly violating the treaty of Versailles which stipulated that Germany disarm its military.
Because Germany disguised the rearmament effort so well, they were able to reinforce their soldiers and eventually launched an attack on unsuspecting neighbors, France inclusive. The rearmament period offered a lot of job opportunities for the German citizens especially those in the technology and aeronautics industry.