Answer:
Air pressure is the weight of the atmosphere pressing down on the earth. It is measured by a barometer in units called millibars. Most barometers use mercury in a glass column, like a thermometer, to measure the change in air pressure.
Explanation:
pls mark me as a brainlliest
Answer:
B. Porcelain
Explanation:
Ivory was found in Africa, Silk is not pottery, and Gunpowder was used in guns and in Great Britain.
I would say religious and racial discrimination.
