{"type":"rich","version":"1.0","title":"Classical period 1750- 1820","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/YNFEa8Xxkq9Q88uw/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/60d1446bc5f192af50f3cbb0\" frameborder=\"0\" allowfullscreen></iframe>"}