The answer your looking for is b
Answer:
Trench warfare in World War I was employed primarily on the Western Front, an area of northern France and Belgium that saw combat between German troops and Allied forces from France, Great Britain and, later, the United States. Although trenches were hardly new to combat: Prior to the advent of firearms and artillery, they were used as defenses against attack, such as moats surrounding castles. But they became a fundamental part of strategy with the influx of modern weapons of war.
Long, narrow trenches dug into the ground at the front, usually by the infantry soldiers who would occupy them for weeks at a time, were designed to protect World War I troops from machine-gun fire and artillery attack from the air. As the “Great War” also saw the wide use of chemical warfare and poison gas, the trenches were thought to offer some degree of protection against exposure. (While significant exposure to militarized chemicals such as mustard gas would result in almost certain death, many of the gases used in World War I were still relatively weak.)
Explanation:
The fundamental flaw in Chadwick's thinking about the spread of disease throughout London was that, Chadwick accidentally caused the deaths of tens of thousands of cholera victims due to his lack of understanding of the germ theory of disease.
Sir Edwin Chadwick was an English social reformer who improve sanitation and public health.
During the cholera epidemic of 1848- 49, Chadwick ordered the replacement of the traditional brick sewers with his self-flushing, glazed pipes in hopes of conveying the sewage to farmers for use as manure.
Hence, during the 19th century, four major outbreaks of cholera disease damaged London communities and led to the death of tens of thousands of people.
To learn more about the cholera here:
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Answer: Charles I of Spain
Explanation:
Charles I of Spain Becomes the Holy Roman Emperor 28 June 1519. On 28 June 1519, Charles I of Spain became Charles V, The Holy Roman Emperor. His kingdom spanned the Iberian peninsula to Italy and north into Germany and the low countries.
