One way to ensure that is to mainstream the Welsh language in policy areas that are key to the future of these communities, such as planning, housing and developing the economy.
Un ffordd o sicrhau hynny yw prif-ffrydio’r Gymraeg mewn meysydd sy’n allweddol i ddyfodol y cymunedau hyn, fel cynllunio, tai a datblygu’r economi.