19वीं सदी साम्राज्यों की सदी थी, 20वीं सदी राष्ट्र-राज्यों की सदी थी। 21वीं सदी शहरों की सदी होगी।
The 19th century was a century of empires, the 20th century was a century of nation states. The 21st century will be a century of cities.
The 19th century was a century of empires, the 20th century was a century of nation states. The 21st century will be a century of cities.