Answer: Scientists have known that smoking causes cancer since at least the 1940s, when epidemiological studies showed a clear link between smoking and lung cancer. Experiments conducted in the 1950s confirmed that the chemicals in cigarette smoke could cause cancer in mice.
Although it was recognized before the dates you provided, the mechanism wasn't fully understood. In the 1800s, people made comments on the connection between hacking blood, TB rates, and early deaths. Remember that until the 1900s, medicine was not a science, and it was difficult to determine what caused any sickness, including cancer. After Mendel was rediscovered and Watson/Crick et al. were still being discovered, DNA mutations were only hazily understood. Additionally, consumption skyrocketed once the US government included cigarettes in GI rations; I doubt that as many individuals smoked or chain smoked earlier.
The finding was discovered in the 1930s by German scientists. The findings, however, went unnoticed for 20 years until being found in the USA and other parts of Europe since the rest of the world rejected them all as Nazis and did not want anything to do with them.
The correct answer is option C. "They were important centers of trade with the East and the Byzantine Empire". Italian city-states were prosperous as they served as centers of trade of the Byzantine Empire with the rest of the world in the East. The italian states seized the opportunity of making profits from the transport and sale of goods from one end of the known world to the other.
Poverty is a state or condition in which a person or community lacks the financial resources and essentials for a minimum standard of living. Poverty means that the income level from employment is so low that basic human needs can't be met
Nixon repeatedly discussed different methods by which as much as $1 million could be paid to the burglars without the payments being traced to the White House.
Answer:With this loss of territory and a failed invasion of England, the French diplomats sought peace. In 1763, the European powers of Great Britain, France, Spain, and Portugal collectively signed the Treaty of Paris, thus ending the Seven Years.
