1- X-Ray Telescope
2- Optical Telescope
3- Radio Telescope
<span>4- Gamma Ray Telescope
</span>
Well, mostly because of the promise of wealth and power.
In the past, many of the strongest empires in Africa gained it powered due to the trade that they did with the Europeans
hope this helps
On the 1st of July 1731, Benjamin Franklin and members from the Junto drew up "Articles of Agreement" to form a library. The Junto group was fascinated in various ideas from economics to solving social woes to politics to science. However, they could not turn to books to increase their know-hows or to settle disputes because they owned few tomes. Nevertheless, they recognized that through the Junto's joined purchasing power, books could become available to all members. 50 subscribers invested 40 shillings each to commence a library. The members also promised to invest 10 shillings more each year to purchase more books and to assist in the maintenance of the library. Their motto was "To support the common good is divine."
