An argument that focuses on a single important or main idea is called

A unified argument is the answer.

the speech this question is referring to is president kennedy's special message to the congress on urgent national needs, may 25, 1961

kennedy responds in a very direct and concrete way to those thinking that communism is a positive system:

"yet their aggression is more often concealed than open. they have fired no missiles; and their troops are seldom seen. they send arms, agitators, aid, technicians and propaganda to every troubled area. but where fighting is required, it is usually done by others--by guerrillas striking at night, by assassins striking alone--assassins who have taken the lives of four thousand civil officers in the last twelve months in vietnam alone--by subversives and saboteurs and insurrectionists, who in some cases control whole areas inside of independent nations." (kennedy)

president kennedy presents communism as cowardly, as a hidden and treacherous weapon that strikes from the shadows like thieves, he represents the system as not even being capable of showing and open and overt attack or confrontation. to finish up the response, he expresses that the system attacks even a country's idependence and freedom.

hey there

use of language is very important in order to write in a good way. each literary genre has its different exploitation of language and, therefore, many differences and similarities can emerge. shakespeare's work (romeo and juliet) is a sample of a drama. its language is full of dialogue to describe the beauty of first love in people; everything it's pink color. it briefly describes fictional scenes and situations. on the other hand, the calypso borealis, by john muirs, it's narrative essay: its language is full of descriptions to describe an experience, a real experience. hyperbole is not used as in drama genre. he falls in love with discovering a real place and his direct feelings.

hope this !

f yes, , mark brainliest : )

have a good night.