Answer: C. arrival of invaders.
Outside pressures were especially problematic for the Byzantine Empire, in particular, the arrival of invaders. The most important of these were the Ottoman Turks. By 1373, Emperor John V was forced (as were the Serbian princes and Bulgarian rulers) to become a vassal of the Turks due to the failing economy of the empire and their inability to defend themselves. The rise of Murad II as a sultan proved even more challenging to Byzantium, as he laid siege to the city. Finally, his successor, Mehmed II successfully conquered the city in 1453.
The research Dr. Destri is familiar with reflects the Evolutionary theory of sleep.
<h3>Why we sleep?</h3>
- Even while we can now study sleep and associated phenomena, not all academics agree on the precise reasons why we sleep.
- Experts concur that sleep is crucial for health and wellness and that sleeping patterns often follow a predictable routine.
- Many various hypotheses have been put out to explain the benefits and objectives of sleep, as well as why it is necessary.
<h3>What is
Evolutionary theory of
sleep?</h3>
- The adaptive theory of sleep, is a branch of evolutionary science, contends that intervals of activity and inactivity evolved as a way of preserving energy. This hypothesis states that all species have evolved to sleep when being awake would be most dangerous.
- Comparative studies of many animal species provide evidence in favor of this hypothesis.
- Animals with few natural predators, like lions and bears, frequently snooze for 12 to 15 hours every day. The opposite is true for animals that have a lot of natural predators, who often only get 4 or 5 hours of sleep every day.
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<span>The great danger of democratic government to the framers is the rick of the Tyranny of the majority. Democracy is a complicated constitution as it works towards the opinions and desires of the common people but still leaves some people dissatisfied because of the mentioned reason.</span>
Answer:
1. The right to vote
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<span>A person who holds sovereign rule over a kingdom or empire.</span>