I cannot answer this question if you don't give the possible answers.
The America Legislator that assaulted a fellow Congressman prior to the start of the Civil War was Preston Smith Brooks, an supporter of slavery, who beat Senator Charle Sumner, an abolitionist, close to death at the United State Senate itself. For decades later Senators carried weapons, including revolvers into the Senate to protect themselves from assaults. Preventive measures proved unsufficient, since many more violent acts happenned over the years.
The advanced the theory that theory threat the infamous trial such is still heraldrd as the speed of light .
Answer: 26 of July 1953 to 31 of December 1958
source: wikipedia :DD
1, 2, and 5 are all associated with WWI.
