What role did fort Pulaski play during the civil war

Which of the islamic empires (ottomans, mughals, safavids) were the most influential and why?

What was going on with south asia before europeans came ?

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity