Element education policy during the 20th and 21st centuries

"The goals of educational policy have evolved in the United States as society and culture have ... Academies combined elements of both. ... The reforms of the early 20th century focused mainly on expanding ... In the 21st century, two major policy issues have been most prominent: school choice and academic performance. "

Explanation:

counter-terrorism incorporates the practice, military tactics, techniques, and strategy that government, military, law enforcement, business, and intelligence agencies use to combat or prevent terrorism.

basically prevent, pursue, protect, and prepare, google it if you need more info