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Control of labour and inter-group conflict is characteristic of corporate-level or 'tribal' groups, headed by a charismatic individual; whether a 'big man' or a proto-chief, functioning as a lineage-group head. Whether a non-hierarchical system of organization existed is debatable, and there is no evidence that explicitly suggests that Neolithic societies functioned under any dominating class or individual, as was the case in the chiefdoms of the European Early Bronze Age. Theories to explain the apparent implied egalitarianism of Neolithic (and Paleolithic) societies have arisen, notably the Marxist concept of primitive communism.
What type of disagreement existed in tribal groups that were controlled by Neolithic groups?
A: unanswerable

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Recent molecular phylogenetic studies suggest that most placental orders diverged about 100 to 85 million years ago and that modern families appeared in the period from the late Eocene through the Miocene. But paleontologists object that no placental fossils have been found from before the end of the Cretaceous. The earliest undisputed fossils of placentals come from the early Paleocene, after the extinction of the dinosaurs. In particular, scientists have recently identified an early Paleocene animal named Protungulatum donnae as one of the first placental mammals. The earliest known ancestor of primates is Archicebus achilles from around 55 million years ago. This tiny primate weighed 20–30 grams (0.7–1.1 ounce) and could fit within a human palm.
How much did the first primate weigh?
A: 20–30 grams (0.7–1.1 ounce)

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The cellular phone carrier group Open Mobile Terminal Platform (OMTP) in 2007 endorsed micro-USB as the standard connector for data and power on mobile devices In addition, on 22 October 2009 the International Telecommunication Union (ITU) has also announced that it had embraced micro-USB as the Universal Charging Solution its "energy-efficient one-charger-fits-all new mobile phone solution," and added: "Based on the Micro-USB interface, UCS chargers also include a 4-star or higher efficiency rating—​​up to three times more energy-efficient than an unrated charger."
In 2007 who endorsed micro-USB as the standard connector for data and power on mobile devices?
A: The cellular phone carrier group Open Mobile Terminal Platform

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Another scholar contends that the minority leader position emerged even before 1883. On the Democratic side, "there were serious caucus fights for the minority speakership nomination in 1871 and 1873," indicating that the "nomination carried with it some vestige of leadership." Further, when Republicans were in the minority, the party nominated for Speaker a series of prominent lawmakers, including ex-Speaker James Blaine of Maine in 1875, former Appropriations Chairman James A. Garfield of Ohio, in 1876, 1877, and 1879, and ex-Speaker Keifer in 1883. "It is hard to believe that House partisans would place a man in the speakership when in the majority, and nominate him for this office when in the minority, and not look to him for legislative guidance." This was not the case, according to some observers, with respect to ex-Speaker Keifer.
What did Democrats nominate James A. Garfield for in 1875?
A:
unanswerable