What about the phoenician geography made them rely on imports and exports

The Phoenician geography made them rely on imports and exports because of they lack in farmland and their close proximity to the Mediterranean.

The Phoenicians subsisted on a narrow strip of the Syrian coast. This land consists of highlands and mountains with a munificence of forests. However, it lacks the productive land which would have made large-scale cultivation possible.

Due to the inadequate size of their territory, the Phoenicians relied on the sea and commerce to sustain their living.  The lack of sufficient farmland drove the Phoenicians to turn to the sea and became navigators and traders, which resulted in their establishing many colonies. They traded silver, lead, horses, ebony, iron, tin,  ivory, and precious stones.

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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 : -