It is important to respect and understand Japanese customs.

Could you tell me your country code?

The Ryukyu Kingdom was once a nation in East Asia.

He was dreaming of the restoration of his country.

The Islamic State is an extremist organization spread across the Middle East.

He solved the problem in a scientific way.

This reaction occurs through a chemical process.

He is good at tactical thinking.

He exercises every day and leads a healthy life.

Fundamental knowledge of mathematics is necessary to solve advanced problems.