Upper Eurasia
10,000,000–
1
1
2
3
4000,000–
9999,999
1
3
4
3
2
2
1
1,000,000–
3999,999
8
14
35
43
23
47
54
400,000–
999,999
2
1 7
6 3
100,000–
399,999
2
2
5
1 0
2 0
1 2 3
10,000–
99,999
4
1 0
2 8
7 4
8 5
5 6
North America
and Oceania
10,000,000–
1
1
2
2
2
2
4000,000–
9999,999
1
2
3
6
0
1 3
1 3
1,000,000–
3999,999
3
13
32
39
15
42
53
400,000–
999,999
8
2 9
100,000–
399,999
7
7 4
10,000–
99,999
1
3
3
Latin America
10,000,000–
2
4
3
4
6
4000,000–
9999,999
1
3
4
4
7
1 4
1,000,000–
3999,999
7
23
43
39
57
74
400,000–
999,999
1
1 0
100,000–
399,999
1
4
1
2
12
53
10,000–
99,999
4
5
9
1 5
2 7
(continued)
5 Regional Diversity and Sustainability of Megacities in Global Historical. . .
79