E Why was silver money one of Charlemagne's most important reforms?
O It enabled people to purchase goods at lower prices.
o It allowed people to use one standard to buy and sell goods.
It gave the church an important role in international trade.
O It helped merchants develop new products and services to sell.

It allowed people to use one standard to buy and sell goods.

Explanation:

Charlemagne was king of Frank and Lombards, under Pope Leo III, he was crown as the emperor of Rome in 800 A.D. He was known for his political capabilities and military skills.

To maintain an eased the trade of goods and services, the standard currency was introduced under Charlemagne when he declared silver coins minted throughout the Holy Roman Empire. It had its official value which helped merchants from England, France and other places to trade without worrying about the currency and price of the coins. A wool merchant from English could sell to a weaver in Flanders who could sell woollen products to a dyer in Cologne. Cologne merchants could trade to merchants in Venice who sold woollen materials to royalties.

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 : -

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