within a period of four years
31First Stadtholderless Period — The First Stadtholderless Period or Era (1650 1672) (Dutch Eerste Stadhouderloze Tijdperk ) is the period in the history of the Dutch Republic in which it reached the zenith of its economic, military and political Golden Age. The term has… …
32Ordovician Period — Interval of geologic time, 490–443 million years ago, the second oldest period of the Paleozoic Era. It follows the Cambrian and precedes the Silurian. During the Ordovician, many of the landmasses were aligned in the tropics. Life was dominated… …
33Jerusalem during the Ottoman period — The rule of the Ottoman Empire over the region of Jerusalem lasted 400 years from 1517 until its conquest by Britain in 1917. Since the end of the Crusader rule over the holy city, Jerusalem had almost stagnated, and become a civilian city.… …
34Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …
35Jurassic Period — Interval of geologic time, 206–144 million years ago, that is one of the three major divisions of the Mesozoic Era, preceded by the Triassic Period and followed by the Cretaceous. During the Jurassic, Pangea began to break up into the present day …
36Carboniferous Period — Interval of geologic time 354–290 million years ago, marked by great changes in world geography. All the landmasses drew closer together as a result of tectonic plate movements. The supercontinent Gondwana occupied much of the Southern Hemisphere …
37Jerusalem during the Mamluk period — Jerusalem was under the Mamluk rule from 1260 to 1516. This period coincides with the history of the city s years of Mamluk rule in Israel. Mamluk Jerusalem was a city strategically marginal, politically and economically, yet high religious… …
38Nara period — History of Japan Shōsōin Paleolithic 35,000–14,000 BC Jōmon period 14,000–300 BC Yayoi period 300 BC–250 AD Kofun period 250–538 Asuka period …
39Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …
40Tinbergen's four questions — When asked questions of animal and human behavior such as why these creatures see, even elementary school children can answer that vision helps them find food and avoid danger. Biologists have three additional explanations: A particular series of …
