<span />the earth was thought to be the center of the universe, rather than the sun
In the period from circa 1200 to 1450, African states used their power by keeping their royal leaders.
<u>Explanation</u>:
- The government took action to develop administrative institutions and to centralize power. They listed the necessary things to improve their administrative institutions. The economy of China concentrated on increasing its productive capacity.
- While China has been concentrating on this, African states have been using their powers. Using their royal leaders they have exercised their power. On the other hand, China was doing innovations in agriculture and manufacturing.
<span>United States will take only a few minutes to have from MRBM. Medium-range ballistic missile would be launched from the Soviet Union to the US and it would only take 20 minutes.
</span><span>So if you are looking for a number answer then 3 -10 minutes would be it.</span>
Explanation:
He subsequently used his newly invented telescope to discover four of the moons circling Jupiter, to study Saturn, to observe the phases of Venus, and to study sunspots on the Sun. Galileo's observations strengthened his belief in Copernicus' theory that Earth and all other planets revolve around the Sun.
