It is sometimes referred to as the Roaring Twenties or the Jazz Age, when speaking about the United States, Canada or the United Kingdom. In Europe the decade is sometimes referred to as the "Golden Twenties" because of the economic boom following World War I. It was a time of conservatism, it was a time of great social change. From the world of fashion to the world to politics, forces clashed to produce the most explosive decade of the century.
The one from Montreal is of a defunct tramway system, here on St-Laurent boulevard (St-Lawrence in pict). :)