For Figures 4.2 and 4.3, a very broad rough classification of countries was used. Countries in North America (except Mexico), Europe (both east and west), and Australia and New Zealand were included in the metropolitan aggregate (Figure 4.2). Countries in Asia (east and south), North Africa and the Middle East, Latin America, and Africa were included in the colonial and semi-colonial aggregate (Figure 4.3).

Countries included in the metropolitan aggregate (Figure 4.2) (1990 names; countries with fewer than 100 labor unrest mentions in the WLG database not included in this list): North America (Canada, United States); Europe (Albania, Austria, Belgium, Bulgaria, Cyprus, Czechoslovakia, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Malta, Netherlands, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, United Kingdom, USSR/Russia, Yugoslavia); Oceania (Australia, New Zealand).

Countries included in the colonial and semi-colonial aggregate (Figure 4.3) (1990 names; countries with fewer than 100 labor unrest mentions in the WLG database not included in this list): Middle East and North Africa (Algeria, Egypt, Iran, Israel, Lebanon, Morocco, Sudan, Tunisia, Turkey); Latin America (Argentina, Bolivia, Brazil, Chile, Colombia, Cuba, Dominican Republic, Ecuador, EI Salvador, Guyana, Jamaica, Mexico, Nicaragua, Panama, Peru, Puerto Rico, Trinidad & Tobago, Uruguay, Venezuela); Africa (Ghana, Kenya, Nigeria, South Africa, Zambia, Zimbabwe); Asia (Bangladesh, Burma, China, Hong Kong, India, Japan, Korea, Malaysia, Pakistan, Philippines, Singapore, Sri Lanka).

Countries included in the world aggregate: Figure 4.1 includes all countries with mentions of labor unrest in the WLG database.