Did the Lucky egg and exp.share exist in gen 3?

Question

I'm playing Ruby and I'm looking to make some quick level ups

Answer 1

They were introduced in Gen 2.
Here

Comments

dat 52 second difference...

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Lol
Speeeeeeeeeeed

Answer 2

Lucky Egg:

Yes, there is a 5% chance that a wild Chansey or Blissey will be holding one.

Source

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Exp. Share:

Yes, it is found in Rustboro City in R/S/E, and on Route 15 on FR/LG

Source