Both the Battle of the Coral Sea and the Battle of Midway proved the importance of
O aircraft carriers and air power which was used to seriously weaken the Japanese
navy.
Odefensive systems such as "Star Wars" to monitor enemy movements.
having first-strike capability in the delivery of nuclear bombs.
O using cruise missiles to disable enemy warships.

from the conditions of the working class in england by friedrich engels,the main idea is :

a countries leader should be motivated by the common good of the country.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.

biological/genetic factors means they were born or predisposed to have something. nothing can really change it, and you can't really do much to "fix" it. it isn't something learned

these are the biological factors:

adrian is relatively tall and he is on the basketball team

(adrian can't ever stop being tall or force himself to be tall. likely one or both of his parents are tall as well and they passed on the tall gene. he probably does basketball because he is tall)

the rest are environmental/cultural factors. these are things that are taught to us. for example, cynthia wasn't born saving pocket money, her family most likely taught her this (environmental factor)

hope this !