How to Use "bygone" with Example Sentences

1. Barely recalls the dreams of a bygone age .
2. Now the driftwood hut is a relic of a bygone age , in a wilderness of breathtaking beauty .
3. Like argentina in 1982 , china is ruled by an unelected cabal at the apex of an organisation designed for a bygone era .
4. But it is the rail system of a bygone india that has attracted my attention recently .
5. But was it all down to nostalgia for a bygone era , or a promotional campaign par excellence ?