History

President John F. Kennedy announced the commitment to the US lunar mission in May 1961, setting the goal to land a man on the Moon and return him safely to Earth before the decade's end.

The United States purchased Alaska from Russia in 1867 for $7.2 million. This amount is well documented by authoritative sources including Britannica, History.com, and the U.S. National Archives. The purchase price is commonly cited as $7.2 million, which equates to about two cents per acre for the vast territory acquired. Therefore, option B ($7.2 million) is the correct answer.

Richard Nixon is the only U.S. president who resigned from office, doing so in 1974 amid the Watergate scandal. The other presidents listed did not resign.

The Samma dynasty was founded in the mid-14th century, around 1336 CE, when Jam Unar established Samma rule over Sindh. The commonly cited year 1350 is close but not the exact founding year. Therefore, none of the given options (1350, 1351, 1352) are precisely correct, making 'None of These' the most accurate answer.

Tipu Sultan sought assistance from the French government to counter the British East India Company's expansion in India. He established diplomatic relations and requested military support from France during his resistance against British rule.

West Germany's entry into NATO in 1955 was a key factor that prompted the Soviet Union to establish the Warsaw Pact as a counterbalance to NATO's growing influence in Europe.

The Yalta Conference (February 1945) and the Potsdam Conference (July-August 1945) were key WWII meetings where Allied leaders discussed post-war arrangements. At Yalta, Stalin was acknowledged to have control over Poland through the Red Army's presence and a broadly based provisional government was agreed upon, effectively giving the Soviets temporary control. The conference also laid the groundwork for dividing Germany into occupation zones. At Potsdam, the Allies formalized the division of Germany into four occupation zones, with the Soviet Union controlling the eastern part, and approved shifting Poland's western border into former German territory. Thus, Stalin was given temporary control of Poland and a portion of Germany under the terms outlined at the Yalta and Potsdam Conferences. The other options mention non-existent conferences and are incorrect.

The Mamluk Dynasty, which ruled from 1206 to 1290 in Delhi, was founded by Qutb ud-Din Aibak, a former slave who became the first Sultan of Delhi. He established the dynasty after the death of Muhammad Ghori.

The Treaty of Portsmouth, which ended the Russo-Japanese War, was signed on September 5, 1905. This treaty was negotiated in Portsmouth, New Hampshire, USA, marking the official end of hostilities between Russia and Japan.

The Portuguese East India Company was established in August 1628, not 1627. This is confirmed by multiple reliable sources including Wikipedia, which states that the company was granted a charter by King Philip III in August 1628. Therefore, option B (1628) is the correct answer. The other options, including 1627 and 1629, are incorrect, and 'None of these' is invalid since the correct year is listed as 1628.