Refer to the map. Map of Trade Routes and World Religions in the Late 15th Century. A key notes Islamic areas, Christian areas, Buddhist areas, and Trade routes. Most of Europe and parts of Africa are Christian. Africa, the Middle East, and parts of Russia are Islamic. China, Japan, and other east Asian countries are Buddhist. Trade routes are marked with solid lines. Which of the following contributed to the development of the trans-Saharan routes shown in the map? The rise of accessible river cities such as Timbuktu

The arrival of desirable trade goods from the Red Sea

Climate shifts that reduced desert vegetation coverage

The spread of camels that could travel farther without water

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Like many students at university, you may be unhappy about the results you attain in exams. you may feel that even with all you are doing there must be something more -- or different-- you could be doing to get better grades. we have all at some time or other heard of that student who only studies a couple of hours for final exams and scores a's every time. we stand in awe of those who seem to breeze through without undue effort and seem to need very little in the way of studying to nail an exam. the reasons for success, in what i think are the vast majority of cases, are less esoteric than many students think: successful students consistently apply a series of productive strategies with view to attaining clearly identified learning and grade goals throughout the academic term.