1- X-Ray Telescope
2- Optical Telescope
3- Radio Telescope
<span>4- Gamma Ray Telescope
</span>
Rivers, and flat plains.
Rivers proved pivotal for settlements to grow since it provides a means of water for growing crops, a means of produce which people can consume. Rivers also are a means of transportation and a geographic barrier against attack, albeit slight.
Flat plains also proved viable for settlements because of how easy they were to traverse, coupled with it being easier to farm on said land.
|www.youtub e.com/watch?v =dQw4w9WgXcQ. this video should help!
