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Constantine the Great, who along with Licinius had decreed toleration of Christianity in the Roman Empire by what is commonly called the "Edict of Milan", and was the first Roman Emperor baptized, set precedents for later policy. By Roman law the Emperor was Pontifex Maximus, the high priest of the College of Pontiffs (Collegium Pontificum) of all recognized religions in ancient Rome. To put an end to the doctrinal debate initiated by Arius, Constantine called the first of what would afterwards be called the ecumenical councils and then enforced orthodoxy by Imperial authority.
What did Constantine the Great and Licinius pass to introduce toleration of Christianity in the Roman Empire?
A: Edict of Milan

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Lie groups are of fundamental importance in modern physics: Noether's theorem links continuous symmetries to conserved quantities. Rotation, as well as translations in space and time are basic symmetries of the laws of mechanics. They can, for instance, be used to construct simple models—imposing, say, axial symmetry on a situation will typically lead to significant simplification in the equations one needs to solve to provide a physical description.v[›] Another example are the Lorentz transformations, which relate measurements of time and velocity of two observers in motion relative to each other. They can be deduced in a purely group-theoretical way, by expressing the transformations as a rotational symmetry of Minkowski space. The latter serves—in the absence of significant gravitation—as a model of space time in special relativity. The full symmetry group of Minkowski space, i.e. including translations, is known as the Poincaré group. By the above, it plays a pivotal role in special relativity and, by implication, for quantum field theories. Symmetries that vary with location are central to the modern description of physical interactions with the help of gauge theory.
What measures the time and velocity of two observers?
A: unanswerable

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Old English is one of the West Germanic languages, and its closest relatives are Old Frisian and Old Saxon. Like other old Germanic languages, it is very different from Modern English and difficult for Modern English speakers to understand without study. Old English grammar is quite similar to that of modern German: nouns, adjectives, pronouns, and verbs have many inflectional endings and forms, and word order is much freer. The oldest Old English inscriptions were written using a runic system, but from about the 9th century this was replaced by a version of the Latin alphabet.
To what language group does Old English belong?
A: West Germanic

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The first favours a primordialist approach which takes the sense of self and belonging to a collective group as a fixed thing, defined by objective criteria such as common ancestry and common biological characteristics. The second, rooted in social constructionist theory, takes the view that identity is formed by a predominantly political choice of certain characteristics. In so doing, it questions the idea that identity is a natural given, characterised by fixed, supposedly objective criteria. Both approaches need to be understood in their respective political and historical contexts, characterised by debate on issues of class, race and ethnicity. While they have been criticized, they continue to exert an influence on approaches to the conceptualisation of identity today.
What theory says that political choice is based on identity characteristics?
A:
unanswerable