Why are Spain and Italy developed countries?

Spain is completely underestimated. At its peak, it was a colony, including Europe (Belgium, Netherlands, Italy, Luxembourg, etc. ), North America, South America, North Africa, Spain. In 20 19, its GDP ranked 13 in the world, and its per capita GDP was 31500 euros (about 250,000 yuan), making it the fifth largest economy in the European Union, and Spain has a complete industrial system. As early as 1902, the industry has been highly developed. Traditional industries are textiles, building materials, steel, manufacturing, shoemaking, automobiles and food processing, while emerging industries are machinery, chemicals, electronics, communications, nuclear energy and aerospace. 1992 I think the Barcelona Olympic Games is the one with the deepest memory after 80s, because it was the best world before, Britain and Italy, the 10th richest immigrant country in Europe, and tens of thousands of Germans immigrated to Spain. Spain is also one of the countries that entered the EU earlier, and one of the countries that entered the developed countries earlier. The standards of developed countries are indispensable for some standards.