What characteristics do the web browsers Internet Explorer and Safari share that heavily influence their market share?

According to alisa miller foreign news bureaus

Hassan is writing his master’s thesis, which is a thirty-page document. he received some feedback from his professor in the form of comments, but does not see where the comments are. what is the fastest way for hassan to find the feedback?

The basic work area of the computer is it screen that you when you first fire up your computer