On April 14, 1865, Abraham Lincoln, the 16th president of the United States, was assassinated by well-known stage actor John Wilkes Booth, while attending the play Our American Cousin at Ford's Theatre in Washington, D.C. Shot in the head as he watched the play, Lincoln died the following day at 7:22 am in the Petersen House opposite the theater. He was the first president to be assassinated. His funeral and burial were marked by an extended period of national mourning. Near the end of the American Civil War, Lincoln's assassination was part of a larger conspiracy intended by Booth to revive the Confederate cause by eliminating the three most important officials of the federal government. Conspirators Lewis Powell and David Herold were assigned to kill Secretary of State William H. Seward, and George Atzerodt was tasked with killing Vice President Andrew Johnson. Beyond Lincoln's death, the plot failed: Seward was only wounded, and Johnson's would-be attacker became drunk instead of killing the vice president. After a dramatic initial escape, Booth was killed at the end of a 12-day chase. Powell, Herold, Atzerodt, and Mary Surratt were...

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered.Although international law requires signatory nations to declare mined areas, precise locations remain secret; and non-complying individuals might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful...

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered.Although international law requires signatory nations to declare mined areas, precise locations remain secret; and non-complying individuals might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful...

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered.Although international law requires signatory nations to declare mined areas, precise locations remain secret; and non-complying individuals might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful...

A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered.Although international law requires signatory nations to declare mined areas, precise locations remain secret; and non-complying individuals might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful...

The Thebaid (; Latin: Thēbaïs, lit. 'Song of Thebes') is a Latin epic poem written by the Roman poet Statius. Published in the early 90s AD, it contains 12 books and recounts the clash of two brothers, Eteocles and Polynices, over the throne of the Greek city of Thebes. After Polynices is sent into exile, he forges an alliance of seven Greek princes and embarks on a military campaign against his brother. Although its source material derives predominantly from the Greek literary tradition, the Thebaid has close ties with other Latin texts such as Vergil's Aeneid and the tragedies of Seneca the Younger. The poem's central themes include the relationship between politics and the family, civil war, and the amoral acts to which it gives rise. Critics have also noted the poem's innovative depiction of Roman mythology. Following in the footsteps of Ovid's Metamorphoses, Statius used an episodic structure which is held together by subtle links between individual episodes. The Thebaid was not widely read in antiquity, but was held...

The Charaka Samhita (IAST: Caraka-Saṃhitā, “Compendium of Charaka”) is a Sanskrit text on Ayurveda (Indian traditional medicine). Along with the Sushruta Samhita, it is one of the two foundational texts of this field that have survived from ancient India. It is one of the three works that constitute the Brhat Trayi. The text is based on the Agnivesha Samhitā, an eighth century BCE encyclopedic medical compendium by Agniveśa. It was revised by Charaka between 100 BCE and 200 CE and renamed Charaka Samhitā. The pre-2nd century CE text consists of eight books and one hundred and twenty chapters. It describes ancient theories on human body, etiology, symptomology and therapeutics for a wide range of diseases. The Charaka Samhita also includes sections on the importance of diet, hygiene, prevention, medical education, and the teamwork of a physician, nurse and patient necessary for recovery to health. Authorship The Charaka Samhita states that the content of the book was...