Research Article

Design of Intelligent Environment Observation and Decision Support for Regional World Economy

Table 2

The expansion trend of the world's regional free trade areas.

YearWestern Europe, Middle East, and MediterraneanCentral Europe, Eastern Europe, and RussiaAmericaAsia and OceaniaAfrica

201521310
201624221
201732311
201812101
201943233
Total12121176