Are you asking for a date or where they attempted to stop them?
During the Cold War, Berlin was split amongst the Allies and the Soviets. The West was democratic, and the East was Communist. To prevent Eastern refugees from fleeing to the West, the Communists built a wall that completely sealed off the West from the East. This was the Berlin Wall.
Answer:
Expanding the empire and greed
Explanation:
The Exlporer at that time were resources hungry due to growing population. They see it fit to find new ways to trade which accidentally discovered America by calling it the West Indies
The discussion between William McKinley and William Jennings Bryan in the race of 1896 based on monetary concerns like the best quality level and defensive taxes. McKinley and the Republicans needed the United States to remain on the "highest quality level," while Bryan and the Populists upheld the "free silver" development to help the poor agriculturists of the South and West and to help haul America out of the sadness that it had been in since 1893.