jan 1, 3300 BC - The Indus River Valley Civilization
The Indus Valley Civilization was in the Bronze Age, meaning they created materials with the metal bronze. During these times they, of course, didn't have modern technology, so life back then was more difficult. For example back then, they used clay pipes to rid the city of dirty water. As time went on, the inhabitants of the ancient Indus Valley developed new techniques in handicraft and metallurgy. They created stuff like baked brick houses, water supply systems, and clusters of large non-residential buildings.
^ "'Harappans United Regions Across 2 Million Sq KM'". Which was from https://en.wikipedia.org/wiki/Indus_Valley_Civilisation#cite_note-4
Notes, were used as resources.
I think that this event affected the others, because this was the beginning of how most of these events happened, meaning it's what the technology of the other events were based on.
Added to timeline:
Ancient India Timeline Project