Tiến hóa công cụ bằng sắt

What is the central idea of “the light of gandhi’s lamp”? how does the central idea emerge and develop over the course of the passage? use evidence from the text to support your response. your response should be at least two complete paragraphs.

Which of the following best explains why the author chose the compare-and-contrast structure for paragraph 2

The greatest gift the sumerians gave the world was the invention of writing. the sumerians were a wealthy people. they needed some way to keep track of what they owned. they began drawing pictures. they used a reed as a pen. they drew on soft pieces of clay. the soft clay was then dried in the sun. the tablet became a permanent record. later, the sumerian drawings changed into wedge-shaped symbols. this kind of writing is called cuneiform. by putting symbols together, the sumerians could write entire sentences.