After the fall of the Western Roman Empire in the 5th Century, …
After the fall of the Western Roman Empire in the 5th Century, division between the Latin Church in the West and the Greek-speaking church in the East widen over issues such as primacy of the Bishop of Rome, iconoclasm, filioque and the crowning of Charlemagne as Holy Roman Emperor.
After hundreds of years of increasing division between the Latin Church led …
After hundreds of years of increasing division between the Latin Church led by the Pope in Rome and the Eastern. Greek church led by the Byzantine Emperor and the Patriarch of Constantinople, the Great Schism in 1054 marks the beginning of the formal division between what will be known as the Roman Catholic Church and the Eastern Orthodox Church.
World War I began after Serbian nationalist Gavrilo Princip assassinated Archduke Franz …
World War I began after Serbian nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand of the Austro-Hungarian Empire on June 28, 1914. Austria-Hungary declared war on Serbia, whose ally Russia then mobilized for war. An alliance between Germany and Austria then prompted Germany to preemptively declare war on Russia, Serbia, and Russia's ally France. Germany then attacked France through Belgium, activating an alliance between the United Kingdom and Belgium, and the United Kingdom declared war on Germany and Austria-Hungary. Created by Sal Khan.
Carbon dating is a real-life example of a first-order reaction. This video …
Carbon dating is a real-life example of a first-order reaction. This video explains half-life in the context of radioactive decay. Created by Sal Khan.
The Hawaiian Islands formed primarily as a result of volcanic activity. While …
The Hawaiian Islands formed primarily as a result of volcanic activity. While most islands form near tectonic plate boundaries, the Hawaiian Islands are nearly 2000 miles away from the nearest plate margin. Therefore, scientists believe that the islands formed due to the presence of the Hawaiian "hot spot," a region deep in the Earth's mantle from which heat rises. This heat produces melted rock (magma), which then pushes through the crust and solidifies. Created by Sal Khan.
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