The European Union's member states are the birthplace of many of the world's largest leading multinational companies, and home to its global headquarters. Among these are distinguished companies ranked first in the world within their industry/sector, like Allianz, which is the largest financial service provider in the world by revenue; WPP plc which is the world's largest advertising agency by revenue; Amorim, which is the world's largest cork-processing and cork producer company; ArcelorMittal, which is the largest steel company in the world; Inditex which is the biggest fashion group in the world; Groupe Danone, which has the world leadership in the dairy products market.