{"type":"rich","version":"1.0","title":"Unit 14 US history（1600-1800）","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/W33IjYdcxrEjGZ95/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5b7dc88d875cc6b123199f79\" frameborder=\"0\" allowfullscreen></iframe>"}