The Earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the Sun. Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesimals.
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Answer: Although modern Western ideas about romantic love owe a certain amount to the classical Greek and Roman past, they were filtered through the very different culture of the European Middle Ages. One can trace the concepts which dominated Western thinking until recently to the mid-12th Century. Before that time, European literature rarely mentions love, and women seldom figure prominently. After that time, within a decade or two, all has changed. Passionate love stories replace epic combat tales and women are exalted to almost god-like status. Simultaneously, the Virgin Mary becomes much more prominent in Catholic devotions, and emotionalism is rampant in religion.
The pioneers of this shift in sensibility seem to have been the troubadours, the poets of Provence (now Southern France). Provençal is a language related to French, Italian and Spanish, and seems to have facilitated the flow of ideas across the often ill-defined borders of 12th-Century Europe. It has often been speculated that Arabic poetry may have influenced their work by way of Moorish Spain. Although this seems likely, it is difficult to confirm.
Explanation: Once the basic themes are laid down by the troubadours, they are imitated by the French trouvères, the German Minnesingers (love poets) and others. Thus, even though the disastrous 13th-Century Albigensian crusade put an end of the golden age of the troubadours, many of their ideas and themes persisted in European literature for centuries afterward.
Answer:
Stone were used
Bone
Explanation:
Throughout the Paleolithic, humans were food gatherers, depending for their subsistence on hunting wild animals and birds, fishing, and collecting wild fruits, nuts, and berries. The artifactual record of this exceedingly long interval is very incomplete; it can be studied from such imperishable objects of now-extinct cultures as were made of flint, stone, bone, and antler. These alone have withstood the ravages of time, and, together with the remains of contemporary animals hunted by our prehistoric forerunners, they are all that scholars have to guide them in attempting to reconstruct human activity throughout this vast interval—approximately 98 percent of the time span since the appearance of the first true hominin stock. In general, these materials develop gradually from single, all-purpose tools to an assemblage of varied and highly specialized types of artifacts, each designed to serve in connection with a specific function. Indeed, it is a process of increasingly more complex technologies, each founded on a specific tradition, that characterizes the cultural development of Paleolithic times. In other words, the trend was from simple to complex, from a stage of nonspecialization to stages of relatively high degrees of specialization, just as has been the case during historic times.
In the manufacture of stone implements, four fundamental traditions were developed by the Paleolithic ancestors: (1) pebble-tool traditions; (2) bifacial-tool, or hand-ax, traditions; (3) flake-tool traditions; and (4) blade-tool traditions. Only rarely are any of these found in “pure” form, and this fact has led to mistaken notions in many instances concerning the significance of various assemblages. Indeed, though a certain tradition might be superseded in a given region by a more advanced method of producing tools, the older technique persisted as long as it was needed for a given purpose. In general, however, there is an overall trend in the order as given above, starting with simple pebble tools that have a single edge sharpened for cutting or chopping. But no true pebble-tool horizons had yet, by the late 20th century, been recognized in Europe. In southern and eastern Asia, on the other hand, pebble tools of primitive type continued in use throughout Paleolithic times.
I think because they do not get along because cats only catch rats and/or mouses and the rats and mouses don't like it
