Federation is where one instance “talks” to another and exchanges content. If your instance isn’t federated then you’d just be stuck with your own content and members with no outside interaction.
2012
The “g” stands for generation. So it’s the 5th iteration of the technology versus the 2nd iteration. Whilst there are many improvements (speed, capacity, security etc) there are some negatives. (I believe mainly to do with signal penetration - i.e. getting a signal in basements, stone wall houses, being behind objects etc.)
Where I’m currently staying I have: 2G, edge, 4G and 5G signals available.
About one in five Israelis are Arab - according to demographic figures.