When is the beginning ending time of the byzantine period?

Which sentence best explains how steam power changed agriculture in england between 1810 and 1850? a. farmers started using steam-powered machines to spray chemical fertilizers and pesticides. b. livestock farmers began using steam-powered machines to milk cattle and shear sheep. c. steam-powered railways transport and sell agricultural produce far from where it was grown. d. steamships to transport large numbers of people from the united states to english farms.

The date a source was created is considered part of its historical context intended audience purpose point of view

Aheard of sheep moves up in the mountain to graze during summer and migrated to the valley during winter what type of migration do the sheep follow