Apr 2, 2026 · Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died …

Background to the American Revolution 1 / 6

Overview of key battles during the American Revolution, highlighting pivotal moments and their impact on the course of history.

Apr 5, 2026 · Clear and simple definitions in American English from Britannica's language experts. More usage examples than any other dictionary.

Apr 5, 2026 · Gene, unit of hereditary information that occupies a fixed position on a chromosome. Genes achieve their effects by directing the synthesis of proteins. They are composed of …

Mar 11, 2026 · Eurasia, geological and geopolitical term that relates in the former sense to the single enormous landmass composed of the continents of Europe and Asia and in the latter sense to the …

Mar 26, 2026 · K–T extinction, a global extinction event responsible for eliminating approximately 80 percent of all animal species about 66 million years ago. It was characterized by the purging of many …

Cristina Peri Rossi is a Uruguayan short-story writer, novelist, and poet who is considered one of the leading Latin American writers to have published in the period after the ‘boom of the Latin American …

Mar 19, 2026 · Islam was promulgated by the Prophet Muhammad in Arabia in the 7th century ce. According to tradition, Muhammad received a revelation from the angel Gabriel at the age of 40, …

Feb 27, 2026 · The Salt March was a major nonviolent protest action in India led by Mahatma Gandhi in March–April 1930. The march, which gained him widespread support among his fellow Indians, was …