Since the paragraph your teacher has provided you contains information which can be used to complete your assignment, it would be quicker to organise the key points which you already have and add in the other required pieces of information as you go over the website and look out for other key events in the entire history of chocolate to add to your timeline. You could do this in point form or with a mind map as below. According to Litemind.com, among the endless uses of mindmapping are researching and consolidating information, as well as planning and problem solving.
Mindmap above created with Inspiration Version 8
Use Sweetsearch as a web search tool...
A 60 second podcast about chocolate from Scientific American.
These TTS Libguides show you how to locate information from various sources.
Your task is to create a timeline which highlights 10 key events in the history of chocolate, using the two sources of information below.
Try searching for books by using the key words you have identified earlier.