Until missionaries and exploreers entered the interior of the continent in the nineteenth century, however, Africa south of the Sahara had been obscured from the rest of the world for centuries. In recent years, new independent African nations have steadily arisen. Only in terms of decades, or even centuries, can we evaluate the importance and permanence of the changes in the distribution of power among nations. Human beings provided the work-energy and toil in the very earliest societies. As they climbed the technological ladder, however, people impressed first animals and then machines to work for them.
Mercury freezes at a higher temperature than alcohol does.
A newspaper story usually tells the important facts in the first paragraph. The rest of the information is arranged in order of importance in the succeeding paragraphs. The cost of building a home continues to rise year after year. Generated by QuizMaker 2.0. Developed for the University of Hawaii Office of Technology Transfer and Economic Development in cooperation with Maui Community College.