The primary way in which the Hundred Years’ War changed warfare in Europe is that it was the first "total" war, in the sense that all resources were mobilized to fight.
Pierre de Coubertin is who this is, ask me anymore questions if needed.
Robert E Lee and Gen Ulysses S. Grant met in the Wilmer McLean home at Appomattox Virginia at 1:00 PM to finalize the terms of surrender for the Confederate Army which effectively ended the US Civil War.
They wrote things for others