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Hace 1 día · The United States is a federal republic of 50 states, with its capital in a federal district, asserting sovereignty over five unincorporated territories and several uninhabited island possessions (some of which are disputed). [198] [199] It is the world's oldest surviving federation. [200]
Hace 4 días · Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and written forms, and may also be conveyed through sign languages. Human language is characterized by its cultural and historical diversity, with significant variations observed ...
Hace 1 día · India, officially the Republic of India ( ISO: Bhārat Gaṇarājya ), [21] is a country in South Asia. It is the seventh-largest country by area; the most populous country as of June 2023; [22] [23] and from the time of its independence in 1947, the world's most populous democracy.
Hace 2 días · Internet TLD. .ru. .рф. Russia, [b] or the Russian Federation, [c] is a country spanning Eastern Europe and North Asia. It is the largest country in the world by area, extending across eleven time zones and sharing land borders with fourteen countries. [d] It is the world's ninth-most populous country and Europe's most populous country.
Hace 3 días · Science is a rigorous, systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the world. [1] [2] Modern science is typically divided into three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology ), which study the physical world; the social sciences (e.g., economics, psychology, and sociology), which study ...
Hace 6 días · The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It consists of nervous tissue and is typically located in the head ( cephalization ), usually near organs for special senses such as vision, hearing and olfaction. Being the most specialized organ, it is responsible for ...
Hace 2 días · Asia is the largest continent on Earth. It covers 9% of the Earth's total surface area (or 30% of its land area), and has the longest coastline, at 62,800 kilometres (39,022 mi). Asia is generally defined as comprising the eastern four-fifths of Eurasia.
