The dates of the Greek world (500-440), Xerxes and Sparta

Grey is Sparta specific events, the less saturated colours Xerxes specific and otherwise Greek world. Note if events crossed over topics, they were generally relegated to Greek world. Please comment any errors with the resource or missing events, to help each other out. Note this doesn't include any dates for ancient historians like Xenophon. Also i bolded the dates i felt were more important when i was trying to memorise these, and the black headers should be read bottom to top to understand how i categorised the sections and their relevance. Feel free to fix/change it and re-upload it.