Answer:
this is science btw and i think 9
Explanation:
During the early to middle years of the nineteenth century between<span> 1836-1860</span>
Pastoralism persisted in areas that could not sustain long-term agricultural pursuits, such as areas with unfavorable climates and unreliable sources of pastures, food sources, and water
Pastoralists we're vital in the spread of technological innovation between different agricultural communities as they moved between settled populations.
