The idea of Masonic brotherhood probably descends from a 16th-century legal definition of a brother as one who has taken an oath of mutual support to another. Accordingly, Masons swear at each degree to keep the contents of that degree secret, and to support and protect their brethren unless they have broken the law. In most Lodges the oath or obligation is taken on a Volume of Sacred Law, whichever book of divine revelation is appropriate to the religious beliefs of the individual brother (usually the Bible in the Anglo-American tradition). In Progressive continental Freemasonry, books other than scripture are permissible, a cause of rupture between Grand Lodges.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How are oaths taken?
Ah, so.. on a Volume of Sacred Law

During a reannexation by Germany (1940–1945), High German was reinstated as the language of education. The population was forced to speak German and 'French' family names were Germanized. Following the Second World War, the 1927 regulation was not reinstated and the teaching of German in primary schools was suspended by a provisional rectorial decree, which was supposed to enable French to regain lost ground. The teaching of German became a major issue, however, as early as 1946. Following World War II, the French government pursued, in line with its traditional language policy, a campaign to suppress the use of German as part of a wider Francization campaign.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Between what time period did the reannexation of Germany occur?
Ah, so.. 1940–1945

Another way to look at differences between populations is to measure genetic differences rather than physical differences between groups. The mid-20th-century anthropologist William C. Boyd defined race as: "A population which differs significantly from other populations in regard to the frequency of one or more of the genes it possesses. It is an arbitrary matter which, and how many, gene loci we choose to consider as a significant 'constellation'". Leonard Lieberman and Rodney Kirk have pointed out that "the paramount weakness of this statement is that if one gene can distinguish races then the number of races is as numerous as the number of human couples reproducing." Moreover, the anthropologist Stephen Molnar has suggested that the discordance of clines inevitably results in a multiplication of races that renders the concept itself useless. The Human Genome Project states "People who have lived in the same geographic region for many generations may have some alleles in common, but no allele will be found in all members of one population and in no members of any other."
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What can one use to look at differences between groups instead of physical differences?
Ah, so..
genetic differences