Question: Originally, international law was unaccepting of treaty reservations, rejecting them unless all parties to the treaty accepted the same reservations. However, in the interest of encouraging the largest number of states to join treaties, a more permissive rule regarding reservations has emerged. While some treaties still expressly forbid any reservations, they are now generally permitted to the extent that they are not inconsistent with the goals and purposes of the treaty.
Is there an answer to this question: A more permissive rule regarding what emerged to encourage the largest number of states to join treaties?

Answer: reservations


Question: The period saw several important technical innovations, like the principle of linear perspective found in the work of Masaccio, and later described by Brunelleschi. Greater realism was also achieved through the scientific study of anatomy, championed by artists like Donatello. This can be seen particularly well in his sculptures, inspired by the study of classical models. As the centre of the movement shifted to Rome, the period culminated in the High Renaissance masters da Vinci, Michelangelo and Raphael.
Is there an answer to this question: Who rejected the scientific study of anatomy for the benefit of art?

Answer: unanswerable


Question: During the later Roman Empire, the principal military developments were attempts to create an effective cavalry force as well as the continued development of highly specialised types of troops. The creation of heavily armoured cataphract-type soldiers as cavalry was an important feature of the 5th-century Roman military. The various invading tribes had differing emphasis on types of soldiers—ranging from the primarily infantry Anglo-Saxon invaders of Britain to the Vandals and Visigoths, who had a high proportion of cavalry in their armies. During the early invasion period, the stirrup had not been introduced into warfare, which limited the usefulness of cavalry as shock troops because it was not possible to put the full force of the horse and rider behind blows struck by the rider. The greatest change in military affairs during the invasion period was the adoption of the Hunnic composite bow in place of the earlier, and weaker, Scythian composite bow. Another development was the increasing use of longswords and the progressive replacement of scale armour by mail armour and lamellar armour.
Is there an answer to this question: Along with lamellar armor, what armor replaced scale armor?

Answer: mail


Question: For the finals, American Idol debuted a new state-of-the-art set and stage on March 11, 2008, along with a new on-air look. David Cook's performance of "Billie Jean" on top-ten night was lauded by the judges, but provoked controversy when they apparently mistook the Chris Cornell arrangement to be David Cook's own even though the performance was introduced as Cornell's version. Cornell himself said he was 'flattered' and praised David Cook's performance. David Cook was taken to the hospital after the top-nine performance show due to heart palpitations and high blood pressure.
Is there an answer to this question: What song did David Cook sing on American Idol during the week of the top ten?

Answer:
Billie Jean