Which structure unfold in chronological order

A timeline.

To determine the chronological order of a structure, you would need to gather information about various structures and their respective time periods. Here's how you can approach this task:

1. Define the scope: Determine the type of structures you're referring to. It could be architectural structures, literary structures, biological structures, or historical structures. This will help in focusing your search.

2. Research: Use reliable sources such as books, academic articles, or reputable websites to gather information about the structures you are interested in. Look for sources that provide historical context and timestamps.

3. Compare time periods: Once you have gathered information about multiple structures, compare their time periods. Look for any historical events, architectural styles, or other contextual factors that can help establish the chronological order.

4. Create a timeline: Organize the structures in a timeline format, placing them from earliest to most recent based on the information you have gathered. Make sure to include any relevant dates or timeframes alongside each structure.

5. Verify information: Double-check your findings by cross-referencing multiple sources to ensure accuracy and reliability of the chronological order you have established.

It's important to note that the specific structures you are referring to were not mentioned in your question. Therefore, the best course of action would be to identify the specific structures you want to learn about and follow the steps outlined above to determine their chronological order.

It seems like you are asking about the chronological order of a specific structure. Could you please provide more details or specify which structure you are referring to?