That would depend on your starting point.
You would cross India.
India
You would cross India.
Traveling along 45 degrees south latitude would take you through several countries, primarily in the Southern Hemisphere. You would cross parts of Chile, Argentina, and New Zealand. Additionally, you would encounter the southern portions of the Indian Ocean and the Southern Ocean. In total, you would traverse three main countries along this latitude.
the Indian ocean!
You have to cross the Indian Ocean to travel from eastern Africa to India, but you can travel on land.
To travel from Pennsylvania to India, you would typically cross the Atlantic Ocean. Depending on your flight path, you might also cross parts of Europe or the Middle East, entering the Indian subcontinent. The most direct route might involve flying over the North Atlantic, passing near or over countries like the UK or France, then moving towards Asia, crossing bodies of water like the Mediterranean Sea and the Arabian Sea before reaching India.
You would have to cross the indian Ocean.
You would not have to cross an ocean getting from India to Switzerland.
you would cross mexico to get to south america.
India
You have to cross the Indian ocean to travel from eastern Africa to India, but you can travel on land.