i think the answer is a.
hi my dear friend,
the first battle of panipat was fought between the invading forces of babur and the lodi empire, which took place on 21 april 1526 in north india. it marked the beginning of the mughal empire. this was one of the earliest battles involving gunpowderfirearms and field artillery.
i believe the answer is b. greenhouse gases produced by burning fossil fuels
the mongols were nomads who started out in northern china and raided their neighbors, the chinese all the time, thats why the great wall was built. . they kept on moving west into europe.