"The unlawful use, or threatened use, of force or violence against individuals or property to coerce and intimidate governments or societies often to achieve political, religious, or ideological objectives. The systematic use of terror especially as a means of coercion. A vehicle through which an extreme minority can coerce and challenge a majority that it could never hop to defeat openly on a field of battle."
a) terriosm
b) world war
c) socilaism
d) law