A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill.There are no official definitions for the generic term …

Une lagune est une étendue d'eau généralement peu profonde séparée de la mer par un cordon littoral (tombolo, lido...).Souvent constitué de sable fin, ce cordon se modifie naturellement, il est vulnérable aux assauts de la mer (tempêtes, tsunamis) et à diverses formes d'artificialisation.Les lagunes sont parfois appelées étangs littoraux (ou barachois en acadien) [1].

The existence of, authority over, and tasks of the armed forces are determined in the constitution of the Netherlands. The Government, which consists of cabinet members led by the Prime Minister and the King, functions as the head of the armed forces.Although service members swear allegiance to the King of the Netherlands, the monarch does not hold the position of …

Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. Symptoms usually begin ten to fifteen days after being bitten by an infected mosquito. If not properly treated, people may have recurrences …

The Revolt of the Batavi took place in the Roman province of Germania Inferior between AD 69 and 70. It was an uprising against the Roman Empire started by the Batavi, a small but militarily powerful Germanic tribe that inhabited Batavia, on the delta of the river Rhine.They were soon joined by the Celtic tribes from Gallia Belgica and some Germanic tribes.

Ulm (German pronunciation: ()) is a city in the German state of Baden-Württemberg, situated on the river Danube on the border with Bavaria.The city, which has an estimated population of more than 126,000 (2018), forms an urban district of its own (German: Stadtkreis) and is the administrative seat of the Alb-Donau district. Founded around 850, Ulm is rich in history and …

ドナウ・デルタ（ドナウ川三角州。ルーマニア語: Delta Dunării デルタ・ドゥナリ, ウクライナ語: Дельта Дунаю ）は、ルーマニアのドブロジャとウクライナのオデッサ州に位置し、面積3,446平方キロメートルでヨーロッパ最大にして、人の手がほとんど入っていない自然状態の三角州（デ …

Darius est finalement obligé de battre en retraite, le Danube marquant ainsi une frontière définitive de l'empire perse. Sur le chemin du retour, la conquête de la Thrace est achevée. Devant la menace, la Macédoine se soumet sans combat et devient un protectorat. Révolte de l'Ionie