Complex sentence: Both Pembrokeshire and Cardigan were historically agricultural areas of Wales, and the combination of their low height off the ground and innate agility of Welsh Corgis would allow them to avoid the hooves of cattle.
Split into simpler sentences: Both Pembrokeshire and Cardigan were historically agricultural areas of Wales. The combination of the low height off the ground and innate agility of Welsh Corgis would allow them to avoid the hooves of cattle.