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1.Is the most populous one.
United Kingdom
Italy
Spain
France
As of 2019, UK has passed France according to this source.
2.Was once in the hands of the Muslims.
United Kingdom
Italy
France
Spain
The whole Iberian peninsula was in the Umayyad hand except the northern parts. It wasn't until 1492 the Emirate of Granada fell into Catholic monarchs.
3.Is the most visited country in the world.
Spain
Italy
France
United Kingdom
86.9 mil. people visited France in 2017.
4.Had the least amount of colonies.
France
United Kingdom
Italy
Spain
5.Has the largest economy of them all (in the nominal method).
Italy
France
United Kingdom
Spain
France is only a hundred thousand US dollars behind UK.
6.Most of world's UNESCO World Heritage Sites are in here.
France
United Kingdom
Spain
Italy
54 sites for Italy, Spain is in the 2nd place with 47 sites.
7.Is the largest producer of wine.
France
Italy
Spain
United Kingdom
Italy leads the rank with France and Spain coming in 2nd and 3rd.
8.Its national animal is bull.
United Kingdom
France
Spain
Italy
9.Was the first to abolish slavery.
Spain
United Kingdom
Italy
France
UK did not abolished the practice of slavery
10.Has two other countries inside itself.
Spain
United Kingdom
Italy
France
San Marino and Vatican City are inside Italy
11.Its capital city's Roman name was "Lutetia".
United Kingdom
Spain
Italy
France
12.The oldest building still under construction is located in here.
United Kingdom
Spain
Italy
France
Located in Barcelona, Sagrada Família's construction started in 1882 and is still unfinished.
13.Its highest point is the lowest one among the others.
Italy
France
United Kingdom
Spain
14.First country to introduce the license plate.
Italy
Spain
United Kingdom
France
15.Was neutral during the WWII.
United Kingdom
France
Italy
Spain
16.Has the shortest coastline of them all.
France
Italy
Spain
United Kingdom
17.Its alliance with Portugal is the world's oldest.
France
Spain
United Kingdom
Italy
18.Has the highest life expectancy.
Spain
Italy
United Kingdom
France
19.The only country to NOT name itself on its stamps.
Spain
France
United Kingdom
Italy
20.The largest anti-war rally took place.
France
Italy
Spain
United Kingdom
In 2003 the protest involved around 3 million people that protested against the Invasion of Iraq.