<span>B. Population trends</span>
Castro became worried that the USA might launch another invasion. So he made an alliance with the USSR.The soviets bought sugar off Cuba so that Cuba didnt have to trade with Kennedy. Also Khruschev put a nuclear weapons site in Cuba, this meant that they were now within range of the US therefore giving them an advantage in the arms race.
The practice of democracy and equal rights to all the citizens are the characteristics which are influences by the Roman and Greek democracy.
Explanation:
One nation and one constitution are also one the characteristic which affected by the Roman and Greek democracy. Giving equal rights and status to each and every citizen regardless of their gender, caster, country origin and etc are ways which are influences the government and what we have today. Equality helped in spreading peace in the nation.