Problem: Orthodox Judaism:

In reaction to the emergence of Reform Judaism, a group of traditionalist German Jews emerged in support of some of the values of the Haskalah, but also wanted to defend the classic, traditional interpretation of Jewish law and tradition. This group was led by those who opposed the establishment of a new temple in Hamburg , as reflected in the booklet "Ele Divrei HaBerit". As a group of Reform Rabbis convened in Braunschweig, Rabbi Jacob Ettlinger of Altona published a manifesto entitled "Shlomei Emunei Yisrael" in German and Hebrew, having 177 Rabbis sign on. At this time the first Orthodox Jewish periodical, "Der Treue Zions Waechter", was launched with the Hebrew supplement "Shomer Zion HaNe'eman" [1845 - 1855]. In later years it was Rav Ettlinger's students Rabbi Samson Raphael Hirsch and Rabbi Azriel Hildesheimer of Berlin who deepened the awareness and strength of Orthodox Jewry. Rabbi Samson Raphael Hirsch commented in 1854:

What was considered the first Reformed Jewish periodical?
---
A: unanswerable

Problem: Marvel Comics:

A series of new editors-in-chief oversaw the company during another slow time for the industry. Once again, Marvel attempted to diversify, and with the updating of the Comics Code achieved moderate to strong success with titles themed to horror (The Tomb of Dracula), martial arts, (Shang-Chi: Master of Kung Fu), sword-and-sorcery (Conan the Barbarian, Red Sonja), satire (Howard the Duck) and science fiction (2001: A Space Odyssey, "Killraven" in Amazing Adventures, Battlestar Galactica, Star Trek, and, late in the decade, the long-running Star Wars series). Some of these were published in larger-format black and white magazines, under its Curtis Magazines imprint. Marvel was able to capitalize on its successful superhero comics of the previous decade by acquiring a new newsstand distributor and greatly expanding its comics line. Marvel pulled ahead of rival DC Comics in 1972, during a time when the price and format of the standard newsstand comic were in flux. Goodman increased the price and size of Marvel's November 1971 cover-dated comics from 15 cents for 36 pages total to 25 cents for 52 pages. DC followed suit, but Marvel the following month dropped its comics to 20 cents for 36 pages, offering a lower-priced product with a higher distributor discount.

What situation allowed Marvel to expand into more adult-themed genre stories?
---
A: the updating of the Comics Code

Problem: Genocide:

The study of genocide has mainly been focused towards the legal aspect of the term. By formally recognizing the act of genocide as a crime, involves the undergoing prosecution that begins with not only seeing genocide as outrageous past any moral standpoint but also may be a legal liability within international relations. When genocide is looked at in a general aspect it is viewed as the deliberate killing of a certain group. Yet is commonly seen to escape the process of trial and prosecution due to the fact that genocide is more often than not committed by the officials in power of a state or area. In 1648 before the term genocide had been coined, the Peace of Westphalia was established to protect ethnic, national, racial and in some instances religious groups. During the 19th century humanitarian intervention was needed due to the fact of conflict and justification of some of the actions executed by the military.

What has been the primary focus in the study of genocide?
---
A: legal aspect of the term

Problem: Printed circuit board:

Multi-layer printed circuit boards have trace layers inside the board. This is achieved by laminating a stack of materials in a press by applying pressure and heat for a period of time. This results in an inseparable one piece product. For example, a four-layer PCB can be fabricated by starting from a two-sided copper-clad laminate, etch the circuitry on both sides, then laminate to the top and bottom pre-preg and copper foil. It is then drilled, plated, and etched again to get traces on top and bottom layers.

If you started with a two-sided laminate etched on either side, laminated to the top and bottom, and processed it again to get traces on the outside layers, how many layers would your final PCB have?
---
A:
four