1.7 billion people in 1950 to 4.1 in 1990 and to 4.9 billion in 2000
"at the time the scientific revolution, sources of knowledge dealing primarily with mathematics and astronomy were most often referred to.
I hope this helps ^-^
<span>The formal qualifications to
become President of the United States of America state that a candidate
must be 35 years of age or older, a resident of the U.S. for at least 14
years and a natural-born citizen. These eligibility requirements are provided in the Constitution.</span>
Answer: C. Franklin D. Roosevelt
Explanation: he used this as a positive outlet for his own personal struggle with polio through creation of the Warm Springs Foundation.