Answer:
The highest agricultural densities as described above depend on/ interrelate to the geographical characteristics ( type of soil, type of weather, the climate, the demographic stability) as much as the phase/ degree of developmentt of civilisation and trades
Seismometers are tools which measure motion in the ground including seismic waves generated by earthquakes, volcanoes, and other activities which might create seismic waves. Seismometers measure any movement of seismic activity in the earth and today this is done by electronic means whereby the machine measures any changes in seismic activity in the surrounding areas of the seismometer. The first seismometer is believed to have been invented by Zhang Heng of China's Han Dynasty in 132 AD.
European colonialism and colonization was the policy or practice of acquiring full or partial political control over other societies and territories, founding a colony, occupying it with settlers, and exploiting it economically.
The appropriate choice for the non-event is ...
... A. The costs of sewing machines began to increase.
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Interchangeable parts generally reduce costs and increase demand (and production).