The protesters at the egypt uprising rally were:

a casual crowd
a conventional crowd
a mass
an acting crowd

The protesters at the Egypt uprising rally were an acting crowd. Egypt started to protest against the stifling rule of longtime President Hosni Mubarak. Then, flash mobs appeared. Flash mobs are a large group of people who gather together in spontaneous activity and are examples of collective behavior. The crowd is one of the forms of collective behavior. There are four types of crowds: casual, conventional, expressive and acting. Acting crowds focus on a specific goal or action, such as a protest movement or riot.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

okay what's the question?