How many people are in the entire world?

There are about 7,643,402,521 people in the world. However there are people being born and dying every few seconds. So as of right now there is 7.74 billion people! :)

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Explanation:

7.8 Billion (2020)

Explanation:

The current world population is 7.8 billion as of October 2020 according to the most recent United Nations estimates elaborated by Worldometer. The term "World Population" refers to the human population (the total number of humans currently living) of the world.

a system in which products were made rapidly by machines

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.