What was happening in the world during 1870s-1930s?

How did the astrolabe benefit explorers? How would ancient Asian travelers have been able to reach North America without boats? What was a major movement during the Renaissance which focused on human beings? Why is it important for historians to analyze sources? Can you freeze a human and bring him back to life? Who was the dictator who did not take part in world war 11? Why did Edmonton become a part of Canada? Why shouldn't we be proud of the size of the British Empire? Why did Carnegie believe that money should not be left to the families of the decedents? What is john smith's middle name? What is the advantages and disadvantages of qin shi Huang? What was the population of the world on 1 January 2004? Who headed simla deputation in 1906? What methods did Robert Owen use to improve American life? What two revolts planted the seeds for nationalism in Europe? What was Nicholas II's favourite food? Which of the following terms best describes the World War 1-era poster seen below? What day was David Thompson born? What continent is a part of the old world? When was the Battle of Bosworth?

What was happening in the world during 1870s-1930s?