Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
writing a poem about someone who has died
Blocking, covering, obscuring, hiding, concealing, veiling, shrouding, darkening, extinguishing, shading, dimming, declining, diminution, extinction, penumbra
D.- Food production grew much more quickly than Malthus predicted
Answer: They led to larger urban cores that used professional armies to increase their territory and enslave people.
Explanation:
Trade generally brings about wealth and this was the case for West African societies as a result of interactions with the Muslim traders who crossed the Sahara to trade with them.
As a result of the gains from trade, wealthy urban cores and cities were formed such as Timbuktu, Gao and Agadez
. The wealth the rulers of these cities acquired enabled them to use professional armies to conquer more territory.
Indeed one of the richest men in history, Mansa Musa ruled over an empire that became so rich due to trade in his territory.
