Answer:
Energy is very important in our life. Matter has the capacity to do work under certain conditions even though it may not be accomplished at a particular moment. A moving of water or water stored behind a dam, for example, can be made of work in a variety of at a particular.Gas or air compressed in a tank can also do work when it is released at a particular time. The capacity of matter to do work is generally called energy.
IMPORTANCE OF ENERGY:
All life on earth depends in some way upon energy. Most of the earth energy comes from the sun. It travels to the earth in rays or waves. Energy in this form is used by plants to make food. Plant food is needed to sustain life by providing nourishment for our bodies and muscles. The sun’s energy is also stored in coal, wood and oil which is also used to produce food and modify matter. It has been estimate that the amount of energy falling on the earth surface annually is equal to the energy of 250 million tons of coal.
Even though Women did not get the right to vote until 1920. The progressive era started in the 1890's. It was mostly started by middle class to wealthy woman who sought to help the lower class woman. The helped improve working conditions for these woman by teaching them how to do collective bargaining with their employers. They also fought for the child labor laws. By helping the underclass and new immigrants the "suffragettes" showed the political and business men that were Women were not second class citizens and could be just as useful outside the home as in the home. This was a very powerful movement, which started small and gain women the right to vote.
Answer:
c. to protect inhabitants of the city-state from attack
Explanation:
Many ancient civilizations had walls around their cities and city-states to protect themselves from foreign attacks.
In ancient times, attacks on other civilizations or cities were a frequent occurrence, as societies often fought over the land and the goods they provided. <u>In Mesopotamia, people wanted to protect themselves from Ur attack.</u> As the cities weren’t that big and elaborated as today, it was possible to surround them with fortification.
<u>This kept the enemies outside of the city and delay their aggression. There was also the possibility to strategically place the military along the walls, so they could observe the outside territory and guard the city, attacking the unwanted intruders during their break-in</u><u>. People would be much safer in places surrounded by walls.</u>
