The correct answer is - C. 1975 - 1999.
The period between 1975 and 1999 was a period in which the world population grew for around 2 billion people. Even thought that is the same rise as in the period between 1930 and 1975, still this period is shorter, and is just 24 years the world population grew from approximately 4 billion people to approximately 6 billion people.
American Revolution started between 1765 to 1783.
Explanation:
The American Revolution is considered as a colonial revolt. In the year 1775, British soldiers called lobsterback, they were known as lobsterback because they wore red coats, they started the revolution to make a new nation. American Revolution is said to be very important because the British colonists in America started rebelling against Great Britain. Many battles took place between them and finally the colonies succeeded that is they got freedom and also became independent country .
The American Revolution took place due to various causes such as protest in Boston,taxes and laws, first Continental Congress, intolerable acts and many more.
I'm pretty sure the answer is D. Articles of Confederation.
The elephants foot can expose up to 10,000 roentgens per hour.