Which pair of countries... are crossed by part of the river Nile?
Which pair of countries... have capital cities that are only four letters long?
Which pair of countries... are island nations?
Which pair of countries... are test cricket nations?
Which pair of countries... are both bigger than Kazakhstan?
Which pair of countries... have both won the football world cup?
Which pair of countries... are both smaller than the Marshall Islands?
Which pair of countries... are both crossed by the equator?
Which pair of countries... contain part of the Andes mountains?
Which pair of countries... allow legal euthanasia?
Which pair of countries... are crossed by the Danube?
Which pair of countries... are both landlocked?
Which pair of countries... are both ranked in Forbes' 10 richest of 2012?
Which pair of countries... both border the Red Sea?
Which pair of countries... both currently have a King?
Which pair of countries... are both currently under communist rule?
Countries of Europe
Countries of Africa
Countries of Asia
