Question

write in one sentence each about Facebook, Instagram and WhatsApp.

Answer 1

Facebook, Inc. is an American online social media and social networking service company based in Menlo Park, California. Its website was launched on February 4, 2004, by Mark Zuckerberg, along with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz and Chris Hughes. 

Instagram is a photo and video-sharing social networking service owned by Facebook, Inc. It was created by Kevin Systrom and Mike Krieger, and launched in October 2010 exclusively on iOS. ... Users can "like" photos, and follow other users to add their content to a feed. 

WhatsApp Messenger is a freeware and cross-platform messaging and Voice over IP service owned by Facebook. The application allows the sending of text messages and voice calls, as well as video calls, images and other media, documents, and user location

Answer 2

                  Facebook that began in February of 2004 as a school-based social network at Harvard University was created by Mark Zuckerberg along with Edward Saverin has evolved as a social networking site where users can post comments, share photographs and post links and do live chat.

                  Instagram is a social networking app made for sharing photos and videos from smartphone. Similar to Facebook or Twitter, everyone who creates an Instagram account has a profile and a news feed. It is   a simplified version of Facebook, with an emphasis on mobile use and virtual sharing.  

                   Whats app Messenger was started as an alternative to SMS. In addition to messages the app supports sending and receiving photos, videos, documents and location. voice and group video call is also made possible.