What caused the downfall of the Mayan Civilisation?

What caused the downfall of the Mayan Civilisation? Scholars have suggested a number of potential reasons for the downfall of Maya civilization in the southern lowlands, including overpopulation, environmental degradation, warfare, shifting trade routes and extended drought. It’s likely that a complex combination of factors was behind the collapse. What does archaeologist Tom Sever think […]

What are Cabinet department leaders responsible for?

What are Cabinet department leaders responsible for? Established in Article II, Section 2 of the Constitution, the Cabinet’s role is to advise the President on any subject he may require relating to the duties of each member’s respective office. What was the purpose of George Washington’s Cabinet? What was the purpose of Washington’s cabinet? It […]

Why are infants referred to as belly breathers?

Why are infants referred to as belly breathers? Infants are often referred to as “belly breathers” because: their rib cage is less rigid and the ribs sit horizontally. An infant or small child’s airway can be occluded if it is overextended or overflexed because: the occiput is proportionately large and the trachea is flexible. When […]

Why is studying collective behavior difficult?

Why is studying collective behavior difficult? Collective Behavior is difficult to study because: (1) There are so many different types – making it hard to recognize any “rules” or explanations that apply to all. Riots, mobs, panics, and mass hysteria are all unique social phenomena. AND, each instance of a riot, mob, or panic is […]

What was the goal of the big stick policy?

What was the goal of the big stick policy? The idea is negotiating peacefully but also having strength in case things go wrong. Simultaneously threatening with the “big stick”, or the military, ties in heavily with the idea of Realpolitik, which implies a pursuit of political power that resembles Machiavellian ideals. What was an example […]

How did Islam conquered Persia?

How did Islam conquered Persia? Conquest of Persia (642–651) After several years, Caliph Umar adopted a new offensive policy, preparing to launch a full-scale invasion of what remained of the Sassanid Empire. The Battle of Nahavand was one of the most decisive battles in Islamic history and proved to be the key to Persia. What […]

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