The correct answer is A. Each program was based on the knowledge of the previous ones.
The Mercury program was the first American manned space program developed between 1961 and 1963 in the framework of the space race with the Soviet Union.
Based on the knowledge provided by the Mercury program, in 1965 NASA launched the second American manned space program, Gemini, whose main goal was to develop the ability necessary for space encounter and coupling.
These abilities were fundamental for the third program, the Apollo missions, whose main objective was to put the first men on the moon, a goal that was accomplished in 1969.
I did some research and the lowest range was 1,000,000 and the highest was 1,700,000. Its hard to estimate this because they didnt have the proper recording instruments we have today.
Between 1941 and 1943, underground resistance<span>movements formed in about 100 Jewish groups. ... On April 19, 1943, the </span>Warsaw ghetto uprising began<span>after German troops and police entered the </span>ghetto<span> to deport its surviving inhabitants. Seven hundred and fifty fighters fought the heavily armed and well-trained Germans.</span>
Explanation:
World War I or the First World War, often abbreviated as WWI or WW1, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously known as the Great War or "the war to end all wars",[7] it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history.[8][9] It also was one of the deadliest conflicts in history,[10] with an estimated 8.5 million combatant deaths and 13 million civilian deaths as a direct result of the war,[11] while resulting genocides and the related 1918 Spanish flu pandemic caused another 17–100 million deaths worldwide,[12][13] including an estimated 2.64 million Spanish flu deaths in Europe and as many as 675,000 Spanish flu deaths in the United States.[14]
Sparta had a highly unusual system of government.
Two kings ruled the city, but a 28-member 'council of elders' limited their powers.
These men were recruited from the highest social class, the aristocratic Spartiates. Rather like medieval knights, the Spartiates were a class of military professionals who lived most of their lives in communal barracks. Rarely seeing their wives and children, their lands were farmed by slaves, leaving them free to pursue to the arts of war.
Beneath this highest class was a middle class, called the Perioeci. Made up of a farmers and artisans who were the descendants of those peoples whom the Spartans had first conquered, the Perioeci paid taxes and could serve in the army, but had no real political rights.
At the bottom were the helots: a slave class descended from those peoples who had resisted subjugation by Sparta. Because the helots were constantly rebelling, the Spartans attempted to control them by forming a secret society that annually murdered any helot suspected of encouraging subversion.
