Article: In European history, the Middle Ages or medieval period lasted from the 5th to the 15th century. It began with the collapse of the Western Roman Empire and merged into the Renaissance and the Age of Discovery. The Middle Ages is the middle period of the three traditional divisions of Western history: Antiquity, Medieval period, and Modern period. The Medieval period is itself subdivided into the Early, the High, and the Late Middle Ages.

Question: Along with the Renaissance, what era occurred at the end of the Middle Ages?
Ans: Age of Discovery

Article: The production for sulfidic zinc ores produces large amounts of sulfur dioxide and cadmium vapor. Smelter slag and other residues of process also contain significant amounts of heavy metals. About 1.1 million tonnes of metallic zinc and 130 thousand tonnes of lead were mined and smelted in the Belgian towns of La Calamine and Plombieres between 1806 and 1882. The dumps of the past mining operations leach significant amounts of zinc and cadmium, and, as a result, the sediments of the Geul River contain significant amounts of heavy metals. About two thousand years ago emissions of zinc from mining and smelting totaled 10 thousand tonnes a year. After increasing 10-fold from 1850, zinc emissions peaked at 3.4 million tonnes per year in the 1980s and declined to 2.7 million tonnes in the 1990s, although a 2005 study of the Arctic troposphere found that the concentrations there did not reflect the decline. Anthropogenic and natural emissions occur at a ratio of 20 to 1.

Question: Why does the Geul River contain heavy metals in a significant amount?
Ans: mining operations leach significant amounts of zinc and cadmium

Article: Zakaria Mohieddin, who was Nasser's vice president, said that Nasser gradually changed during his reign. He ceased consulting his colleagues and made more and more of the decisions himself. Although Nasser repeatedly said that a war with Israel will start at a time of his, or Arab, choosing, on 1967 he started a bluffing game "but a successful bluff means your opponent must not know which cards you are holding. In this case Nasser's opponent could see his hand in the mirror and knew he was only holding a pair of deuces" and Nasser knew that his army is not prepared yet. "All of this was out of character...His tendencies in this regard may have been accentuated by diabetes... That was the only rational explanation for his actions in 1967".

Question: What did Nasser do over the years of his rule?
Ans: gradually changed

Article: Until recently, in most critical writing the post-punk era was "often dismissed as an awkward period in which punk's gleeful ructions petered out into the vacuity of the Eighties". Contemporary scholars have argued to the contrary, asserting that the period produced significant innovations and music on its own. Simon Reynolds described the period as "a fair match for the sixties in terms of the sheer amount of great music created, the spirit of adventure and idealism that infused it, and the way that the music seemed inextricably connected to the political and social turbulence of its era". Nicholas Lezard wrote that the music of the period "was avant-garde, open to any musical possibilities that suggested themselves, united only in the sense that it was very often cerebral, concocted by brainy young men and women interested as much in disturbing the audience, or making them think, as in making a pop song".

Question: What did Nicholas Leonard say united post-punk?
Ans:
cerebral, concocted by brainy young men and women interested as much in disturbing the audience, or making them think, as in making a pop song