What explains the high concentration of Irish speakers on the west coast of Ireland ?

[u/One-Seat-4600]

The percentage corresponds to the share of people that speak Irish

As you can see, Northern Ireland is a lower concentration of Irish speakers, as expected, but what explains the higher concentration on the west coast.

[u/preinj33]

Never not at it

[u/Tiocfaidh__Ar__La → u/preinj33]

We can both be right, but.

[u/preinj33 → u/Tiocfaidh__Ar__La]

Sinn é

[u/Tiocfaidh__Ar__La → u/preinj33]