Answer:Education, work with Church and Spread of Christianity are what helped to unify the Carolingian Empire.
Explanation: Carolingian Empire can be described as an empire in western and central Europe in the middle ages.
Charlemagne was the first Frankish king who united most of the territories of Western and central Europe. He dashed or gave out money and land to the Christian church and protected the popes, He built a school in his palace and employed the best teachers to teach in the school.
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Answer:
A
Explanation:
because it involves borrowing
Whilst performing a blood culture test, the vacutainer system entails drawing without delay into the bottles.
The BD Vacutainer® Blood series device is a closed evacuated. gadget, which consists of a sterile double-ended needle with protection. valve, BD Vacutainer® One-Use holder, and a sterile BD Vacutainer® Evacuated Blood series Tube with a predetermined draw. the majority of BD Vacutainer® Blood collection.
A Vacuum blood series tube is a sterile glass or plastic test tube with a colored rubber stopper developing a vacuum seal interior of the tube, facilitating the drawing of a predetermined extent of liquid.
The vacuum enabled the tube to fill with the proper quantity of blood. the primary evacuated tube invented by using Joseph Kleiner turned into referred to as Evacutainer. BD hired Kleiner as a consultant for the product and modified the name of his tube to Vacutainer®.
Learn more about vacutainer system here: brainly.com/question/8173690
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