Complex sentence: Shielings were therefore associated with the transhumance system of agriculture and generally fell out of use by the end of the 17th century, although in remote areas this system continued into the 18th.
Split into simpler sentences: Shielings were therefore associated with the transhumance system of agriculture. The huts generally fell out of use by the end of the 17th century, although in remote areas this system continued into the 18th.