In which of these issues would the concept of nation-state be most important? A. air pollution
B. border security
C. job outsourcing
D. spread of epidemic diseases

One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.

What is the pattern of urbanisation around the word?