Answer:
Boolean logic or Boolean algebra
This logic stated that there are universal laws of reasoning which can be boiled down to being mathematical in form.
Number 1, The Treaty of Versailles, due to the fact it severely limited the German military, and made Germany pay large war reparations which destroyed the German economy.
Beyond abolishing slavery in the United States, the Civil war was a pivotal event in American history for a number of reasons. One major importance of the war was that the Union retained its territorial integrity and the South was not able to secede from the Union or defeat the Northern forces. Also as a result of the war the Northern States were able to assert political dominance and a degree or retribution through the reconstruction efforts.
Columbus was originally going to sail along the West African coast and around the Cape of Good Hope. But than Columbus had the idea of instead to sail west across the Atlantic instead of around the gigantic African continent.
