I found your question in another source. See attached image. By definition we have:
P = d x h x g
where:
P = Pressure (N / m²)
d = Density (Kg / m³)
h = Height (m)
g = Force of gravity (m / s²)
We have to:
g = 9.8 (m / s²)
d = 1000 Kg / m³
Therefore the pressure only depends on the height.
We have then that the lowest pressure is at point A since that point represents the lowest height with respect to the surface:
h = 20m
Answer: A
Romans accomplished remarkable engineering projects though some were upgrades of other cultures inventions.
Romans introduced innovations to the near East AQUEDUCTS some of which are still standing and which brought drinking water into cities. Romans also built ROADS and many of them are still in use today.
They also built large stone BRIDGES using concrete and iron clamps. CONCRETE increased the constructions’ strength and some bridges are still standing today as the Alcántara.
TUNNELS and ROADS were also important engineering accomplishments from the Romans. Romans are known to have had high MINING TECHNOLOGY, MILLS and WEAPONS.
Answer:
Reduction of immigration from southern and eastern Europe and Asia.
Explanation:
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The Constitution begins with the Preamble, which states the basic mission and goal of the document, and then goes on to describe the different aspects of the government in varies articles. And since the Founding Fathers wanted the Constitution to be able to "adapt" to new times, they allowed for amendments to be made to it.