You may be thinking of the Prime Meridian and the International Date Line.
a latitude line
Tropic of Capricorn
The Tropic of Capricorn passes through Botswana.
the tropic of Capricorn
An imaginary line which passes through the poles of the planet.
the answer is 60 degrees south
Tropic of cancer.
Tropic of Cancer
Every line of longitude passes through both the North and South Poles, which are located on the continent of Antarctica.
The prime meridian passes throughEnglandFranceSpainAlgeriaMaliBurkina FasoGhana.(Antarctica ... a continent without countries)
Tropic of cancer.
The axis is an imaginary line that passes through the North and South Poles of the Earth. This axis is tilted at an angle of approximately 23.5 degrees from perpendicular to the plane of the Earth's orbit around the Sun, which causes the changing seasons.