Until now, researchers believed that homo sapiens, the direct descendants of modern man, evolved in Africa about 200,000 years ago and gradually migrated north, through the Middle East, to Europe and Asia.ther scientists have argued that human beings originated in Africa before moving to other regions 150,000 to 200,000 years ago. Homo sapiens discovered in Middle Awash, Ethiopia, from 160,000 years ago were believed to be the oldest 'modern' human beings.
In recent years, the shortened term app (coined in 1981 or earlier) has become popular to refer to applications for mobile devices such as smartphones and tablets, the shortened form matching their typically smaller scope compared to applications on PCs.
Tâhe enormously popular WhatsApp is a mobile text messaging app designed for cell phone users to send text messages and make calls over the internet without incurring a charge from their cellular carriers. WhatsApp offers simple chat, group chats, free callsâeven to another countryâand end-to-end encryption for your security. You can send video and photos instantly, dictate a voice message and send PDFs, documents, spreadsheets and slideshows within the app. WhatsApp is a cross-platform app.