From whom did the Europeans learn the knowledge of compass?

Question 1: From whom did the Europeans learn the knowledge of compass?

Step 1: The compass was invented in China. Step 2: Europeans learned about the compass through Arab traders who facilitated its transfer from China to the West.

Thus, the answer is C.

$\boxed{C}$

Question 2: What is Caravel?

Step 1: A caravel is a type of small, highly maneuverable sailing ship developed by the Portuguese in the 15th century. Step 2: It was used for exploration, particularly along the West African coast and across the Atlantic Ocean.

Thus, the answer is A.

$\boxed{A}$

Question 3: Who gave the slogan, "No representation, no taxes"?

Step 1: The slogan "No taxation without representation" was a key rallying cry during the American Revolution. Step 2: While James Otis Jr. is often credited with coining the phrase, Samuel Adams was a prominent leader and orator who widely advocated for this principle.

Thus, the answer is D.

$\boxed{D}$

Question 4: In which year was the League of Nations founded?

Step 1: The League of Nations was an intergovernmental organization founded as a result of the Paris Peace Conference that ended World War I. Step 2: It was established on January 10, 1920.

Thus, the answer is C.

$\boxed{C}$

Question 5: बोल्शेविक क्रांति का सम्बन्ध किस देश से है? (To which country is the Bolshevik Revolution related?)

Step 1: The Bolshevik Revolution, also known as the October Revolution, was a revolution in Russia. Step 2: It took place in 1917 and led to the establishment of the Soviet Union.

Thus, the answer is C.

$\boxed{C}$