Years in which European countries took part in an international war, 1500-2000
The following Gantt chart shows the years in which European countries (or their predecessor states) took part in an international wars. Below the country-by-country visualization we see the sum (per half century) of all years in which European countries fought wars.
Percentage of years in which the ‘Great Powers’ fought one another, 1500-2015
Number of annual war battle deaths by world region, 1946-2007
source: Our World in Data