the world's current population is 7.3 billion and the world population in 1915 was 1.8 billion. The increase over the past century is 7.3 billion - 1.8 billion = 5.5 billion. So, the correct answer would be "more than 5 billion" (option D).
Answer:
A nation has diplomats, and is comprised of states. States comprise of delegates, and does not comprise of nations.
Explanation:
The difference between a nation and a state are that a nation has to make deals and treaties with foreign countries. Meanwhile, states have to make deals and treaties with other states. Also, a nation is made up of smaller regions, which are states. States are not made of of nations. These are the major differences. Hope this helps!