Answer:
over 4.5billion years ago is the answer
Explanation:
On the medieval world-maps it was represented only the part of the world known as the 'old world', which is consisted of Europe, Asia and Africa. Before the big discoveries, people living in this continents had knowledge only of this part of the world, while South and North America, Australia and Antarctica where still unknown to them, thus they are missing in the world-maps of this period.
Answer:
Fast growth can create negative externalities e.g. noise pollution and lower air quality arising from air pollution and road congestion. Increased consumption of de-merit goods which damage social welfare. ... These externalities reduce social welfare and can lead to market failure.
