What is the total length of border between the United States and Mexico?

The border between USA and Canada is officially known as ?

The world’s largest land border is between

Which Country from following does not share border line with Afghanistan?

Border line which separates outer space from Earth’s atmosphere is known as

International date line passes through which strait?

Working boundary is the border between Pakistan and

The length of USA and Canada border is

Hindenburg line divides

Mannerheim line separates Russia From