✽ Updated August. 2023 ✽ From what I remember reading, there isn't an EA created world by default, that has everything from all the expansions in it. However, there are some custom worlds and save files that have lots and objects added to them from the different expansion packs.
Here's a few I recommend looking into, in no particular order.:
Recommend playing with Nraas ErrorTrap, Overwatch and MasterController for smoother gameplay and have the error reports looked at via Nraas
https://www.nraas.net/community/----
World Recommendations:Union Cove (Updated to Seasons)
https://www.carls-sims-3-guide.com/unioncove/download.phpNaga's Sunset Valley 7.0 (Updated to Seasons)
https://www.carls-sims-4-guide.com/forum/index.php?topic=3159.0- Will need to travel to WA destinations as well as University.
Sunset Valley 2020 (Updated to Island Paradise)
https://www.carls-sims-4-guide.com/forum/index.php?topic=31158.0- Will need to travel to WA destinations as well as University.
Sunset Island 2 (Updated to Into the Future)
https://www.thesims3.com/assetDetail.html?assetId=7776648- .Sims3Pack File. Has most community lots, except for WA lots and University lots. Has Dive lots, houseboats and hidden island. No Resort. However one can be added. Has room to add Sims 3 Store lots.
Legacy Island III (Updated to Into the Future)
https://www.thesims3.com/assetDetail.html?assetId=8219962Greymont Bay (Updated to Into the Future)
https://modthesims.info/d/598530/greymont-bay.htmlBarcelona (Updated to Into the Future)
https://modthesims.info/d/553749/barcelona.htmlWoodshore (Updated to Into the Future)
https://modthesims.info/d/648735Sim-Tropico (Updated to Island Paradise)
https://modthesims.info/d/654041/sim-tropico.htmlCity Tara V 2.0 (Updated to Island Paradise)
https://modthesims.info/d/651854/city-tara-v-2-0.htmlMy Sim Realty (Various custom worlds that include most if not all expansions)
http://www.mysimrealty.com/Sims3_Worlds.html The Sims 3 Pleasantview Recreation ~ Original Map ~ Populated ~ NO CC
https://pleasantsims.com/sims-3-pleasantview/- May not have all features, but there is room enough to add different expansion / Sims 3 Store lots.
Sunset Valley updated for EPs. [No CC, EA Match lots] - (Updated to University; No IP or ITF)
https://modthesims.info/d/669442- Zipped Save File, Will need to travel to WA destinations as well as University, Original Sunset Valley, edited on the Original world file. All Original Townie Families in their homes. Has most expansion pack community lots, except for WA, Uni and IP. No Resort, Dive Lots, Docks or House Boats, but can be added.
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Links to Recommended Mods:ErrorTrap
https://www.nraas.net/community/ErrorTrapOverwatch
https://www.nraas.net/community/OverwatchMasterController
https://www.nraas.net/community/MasterController