The map shows the four colour theorem in practice.
The theorm states that:
The map above shows when women got the right to vote in each country around the world.
2018 marks the centenary of Women’s suffrage in the UK and even then only with several restrictions (had to be over the age of 30 and meet property qualifications).
Women in the UK would not get get to vote on equal terms as men until the passage of the Representation of the People (Equal Franchise) Act 1928.
The map above, which shows GDP per capita for European countries in 1990 (just as the Iron Curtain was falling), reveals a general increase as one travels from east to west and from south to north. It also invites the question of what may have changed in the intervening quarter century.