Tertiary
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The Gambia is the smallest country in the region that is not an island or a series of islands.
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The surrounding water is usually understood to be continuous, though not necessarily named as a single body of water.
Explanation:
<span>The largest mass extinction in Earth's history, the Permian–Triassic extinction event. The effects of this catastrophe were so devastating that it took life on land 30 million years into the Mesozoic to recover.[1] Recovery of life in the sea may have been much faster." </span>
