Question: From 1792, when the Mint Act was passed, the dollar was defined as 371.25 grains (24.056 g) of silver. Many historians[who?] erroneously assume gold was standardized at a fixed rate in parity with silver; however, there is no evidence of Congress making this law. This has to do with Alexander Hamilton's suggestion to Congress of a fixed 15:1 ratio of silver to gold, respectively. The gold coins that were minted however, were not given any denomination whatsoever and traded for a market value relative to the Congressional standard of the silver dollar. 1834 saw a shift in the gold standard to 23.2 grains (1.50 g), followed by a slight adjustment to 23.22 grains (1.505 g) in 1837 (16:1 ratio).[citation needed]
Is there an answer to this question: In what year did the shift in silver standard occur?

Answer: unanswerable

Question: Finally, an introduced species may unintentionally injure a species that depends on the species it replaces. In Belgium, Prunus spinosa from Eastern Europe leafs much sooner than its West European counterparts, disrupting the feeding habits of the Thecla betulae butterfly (which feeds on the leaves). Introducing new species often leaves endemic and other local species unable to compete with the exotic species and unable to survive. The exotic organisms may be predators, parasites, or may simply outcompete indigenous species for nutrients, water and light.
Is there an answer to this question: What may unintentionally injure a species that depends on the species it feeds on?

Answer: unanswerable

Question: The mutineers seized the Citadel, a Supreme Junta government took over, and on 2628 June, Napoleon's Marshal Moncey attacked the city with a column of 9,000 French imperial troops in the First Battle of Valencia. He failed to take the city in two assaults and retreated to Madrid. Marshal Suchet began a long siege of the city in October 1811, and after intense bombardment forced it to surrender on 8 January 1812. After the capitulation, the French instituted reforms in Valencia, which became the capital of Spain when the Bonapartist pretender to the throne, Jose I (Joseph Bonaparte, Napoleon's elder brother), moved the Court there in the summer of 1812. The disaster of the Battle of Vitoria on 21 June 1813 obliged Suchet to quit Valencia, and the French troops withdrew in July.
Is there an answer to this question: Who led the successful attack against Valencia?

Answer: Suchet

Question: Santa Barbara became the launching place for expeditions into New Mexico by Spanish conquistadors like: Antonio de Espejo, Gaspar Castano, Antonio Gutierrez de Umana, Francisco Leyba de Bonilla, and Vicente de Zaldivar. Several expeditions were led to find a shorter route from Santa Barbara to New Mexico. In April 1598, Juan de Onate finally found a short route from Santa Barbara to New Mexico which came to be called El Paso del Norte (The Northern Pass). The discovery of El Paso Del Norte was important for the expansion of El Camino Real de Tierra Adentro (The Inner Land Royal Road) to link Spanish settlements in New Mexico to Mexico City; El Camino Real de Tierra Adentro facilitated transport of settlers and supplies to New Mexico.
Is there an answer to this question: In which year was El Paso del Norte found?

Answer:
1598