Design,
Building such as welding
In 1884, George Eastman created a dry gel on paper, or what we think of as film. TRUE.
Answer:
They wore iron helmets, chain mail armour, and carried swords, axes, spears and wooden shields. Vikings were also skilled with bows and arrows. The weapons were made with iron, and often decorated with inlaid, or encrusted silver or copper. ... A Viking's weapons were usually buried with him when he died.
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According to the information it can be inferred that Kristina had to sing during the Baroque Era with her own voice without the help of an electronic device such as a microphone because at that time it did not exist.
<h3>What is a microphone?</h3>
A microphone is an input device used to transform sound waves into electrical energy and vice versa in sound recording and playback processes. This device was created at the end of the XIX century.
Based on the above, it can be concluded that Kristina could not use a microphone during the baroque era to amplify her voice because the baroque was during the 17th century and the microphone was developed in the 19th century.
Learn more about microphone in: brainly.com/question/12484674
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