Answer:
C. Primary or Secondary sources related to the event.
Explanation:
A historian using primary or secondary resources related to the events is the most reliable.
<span>After World War II, the Marshall Plan helped countries in Western Europe with rebuilding their economies--since almost every country in Europe at this time had been devastated by the war. </span>
The air pollution in London reached its highest point around 1875.
As a result of the Industrial Revolution, London became:
- overpopulated
- heavily polluted
- quite noisy
From the description of the graph, we can tell that around the year 1875, London suffered the highest air pollution shown by the graph as air pollution reached 610 micrograms per cubic meter.
In conclusion, 1875 saw the worst air pollution in London according to this graph but it is a good thing that this has improved massively as of 2016.
<em>Find out more at brainly.com/question/12048112.</em>
"Adolf Hitler (20 April 1889 -30 April 1945)
was an Austrian-born German politician and the leader of the Nazi Party. Hitler was chancellor of Germany from 1933 to 1945 and dictator of Nazi Germany from 1934 to 1945. He was at the centre of the founding of Nazism, the start of World War II, and the Holocaust. In the final days of the war, during the Battle of Berlin in 1945, Hitler married his long-time mistress, Eva Braun. On 30 April 1945, less than two days later, the two committed suicide to avoid capture by the Red Army, and their corpses were burned. Adolf Hitler, military and political leader of Germany 1933 - 1945, launched World War Two and bears responsibility for the deaths of millions, including six million Jewish people in the Nazi genocide."
- Biography.com
