That Answer is Incorrect. The correct answers are:
Nations must cooperate to bring about and maintain world peace.
Nations must not wage wars or commit war crimes in a desire to control other nations.
Life expectancy, also called life expectancy, is the average number of years that a country's population can expect to live, if the same living conditions experienced at birth are maintained. Life expectancy is closely related to the quality of life that a country has, since factors such as education, health, social assistance, basic sanitation, safety at work, violence rates, absence or presence of wars and internal conflicts influence on directly.
I believe the answer is A: the first satellite launched into space.
