Remember that BC is first, then AD. Also note that the greater the number in BC, the earlier it is, while the greater the number in AD, the more closer to the present it is.
With this in mind, let us look at each date:
First, we see that the largest number for BC is "Zhou Dynasty in China founded, 1000 BC". This is the earliest date given to us.
Next, we see that the second largest number for BC is "Decline of Olmec culture, 400 BC", which is 600 years later than the previous, and 360 years earlier than the next.
Next, we see a dwindle in the number for BC, as "Rise of the Roman Empire, 40 BC", which is 360 years later than the previous and 110 years before the next.
Next, we see the first AD date, or "Destruction of Jerusalem by the Romans, AD 70", which is 110 years after the previous, and 330 years before the last one.
Finally, we have the last AD date, or "Early Middle Ages begin in Europe, AD 400", which is 330 years after the previous date given to us.
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