Alexander led his army to conquer the swat valley and the Swati villagers fled to the mountains asking for a divine protection and they believe that their Gods will protect them because the mountain is so high. In order to conquer and to prove his power Alexander build a wooden ramp to place his catapults and arrow units and also he climbed up so he could hold the star of Jupiter representing his power and greatness.
In the year between 1760 and 1840 AD a tremendous change occured in the field of industry in England .Different machines were invented and came into use to produce the goods . Such machines were operated by power and produced the goods many times more than the goods produced by hands .These change occured in England is called Industrial Revolution
Its kinda confusing maybe try putting a pic to understand better
