What nation has threatened world security in recent years because of its interest in becoming a nuclear power

North korea

The nation that has threatened world security in recent years because of its interest in becoming a nuclear power is North Korea.

it increased the power of the king of england.

3 notebooks and 3 pencils packages

step-by-step explanation:

((3×1.25)+(3×2.75))=12

3×1.25=3.75

3×2.75=8.25

3.75+8.25=$12