What two countries lie on ether side of a strait that was once called land bridge?

1. Sri Lanka

2. India

The strait is called the Palk Strait.

The Palk Strait is a narrow body of water that separates the island nation of Sri Lanka from the southern tip of India. The strait is about 115 kilometres (71 miles) wide and has an average depth of 13 metres (43 feet). The Palk Strait is known for its strong currents and unpredictable weather conditions.

The Palk Strait is located in a geologically active region and is believed to have been formed by the separation of the Indian subcontinent from the rest of Gondwana, about 145 million years ago. The strait was once a land bridge, connecting India and Sri Lanka, but it was submerged by rising sea levels about 12,000 years ago.