Complex sentence: In rural Norfolk buskins made of sacking were worn by farm labourers prior to the 1960s, especially at haymaking and wheat harvest, to prevent rats from running up the inside of the trouser legs.
Split into simpler sentences: In rural Norfolk buskins made of sacking were worn by farm labourers prior to the 1960s. Especially at haymaking and wheat harvest to prevent rats running up the inside of the trouser legs.