Correct

国界

/ guójiè / 
Strokes

Definition

national boundary/border between countries

Example

As a Noun

boundary between two countries; national boundary/frontier; national borderline

1
Yīnyuè
音乐
shì
是
méiyǒu
没有
guójiè
国界
de
的
  
。

Music knows no borders.

2
Kuàyuè
跨越
guójiè
国界

cross the border

3
Huàdìng
划定
guójiè
国界

fix/establish the border

4
Chóng
重
huá
划
guójiè
国界

redraw the boundary