Problem: Newly electrified lines often show a "sparks effect", whereby electrification in passenger rail systems leads to significant jumps in patronage / revenue. The reasons may include electric trains being seen as more modern and attractive to ride, faster and smoother service, and the fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification). Whatever the causes of the sparks effect, it is well established for numerous routes that have electrified over decades.
How can better service quality be achieved?
The answer is the following: rolling stock overhaul / replacement

Problem: Formally, a "database" refers to a set of related data and the way it is organized. Access to these data is usually provided by a "database management system" (DBMS) consisting of an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database (although restrictions may exist that limit access to particular data). The DBMS provides various functions that allow entry, storage and retrieval of large quantities of information and provides ways to manage how that information is organized.
How much data can a DBMS store?
The answer is the following: large quantities

Problem: Western political philosophy originates in the philosophy of ancient Greece, where political philosophy dates back to at least Plato. Ancient Greece was dominated by city-states, which experimented with various forms of political organization, grouped by Plato into four categories: timocracy, tyranny, democracy and oligarchy. One of the first, extremely important classical works of political philosophy is Plato's Republic, which was followed by Aristotle's Nichomachean Ethics and Politics. Roman political philosophy was influenced by the Stoics, including the Roman statesman Cicero.
Western political philosophy originates in what philosophy?
The answer is the following: ancient Greece

Problem: Napoleon continued to entertain a grand scheme to establish a French presence in the Middle East in order to put pressure on Britain and Russia, and perhaps form an alliance with the Ottoman Empire. In February 1806, Ottoman Emperor Selim III finally recognized Napoleon as Emperor. He also opted for an alliance with France, calling France "our sincere and natural ally." That decision brought the Ottoman Empire into a losing war against Russia and Britain. A Franco-Persian alliance was also formed between Napoleon and the Persian Empire of Fat′h-Ali Shah Qajar. It collapsed in 1807, when France and Russia themselves formed an unexpected alliance. In the end, Napoleon had made no effective alliances in the Middle East.
Napoleon's master plan was to establish a French presence in what part of the world?
The answer is the following:
the Middle East