What marked the official transition from Roman Republic to Roman Empire? 1)

When Gaius Marius began his rule as Consul

2)

When Augustus, formally known as Octavian became Emperor of Rome

3)

When Sulla marched on Rome and declared himself dictator

4)

When Tiberius beliefs threatened the Senate and gained support of Rome's underclass

To retort, pertaining to reinstating your interrogate, the preeminent proximate contiguous veracious retort is 2.

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The answer is number 2, When Augustus, formally known as Octavian became Emperor of Rome

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uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -