Why are random samples used in public opinion polls?

Which of the following describes the interactions between muslim and hindu societies in the ind around 1000 ad? they peacefully coexisted. the muslim invaders saw the hindu as a people to subdue and rule over the hindu's violence suppressed muslim attempts of conversion the invading islamic forces used the treasures of hindu culture to build their own empire the islamic invaders allowed the hindus to continue to worship as they chose despite pressures to convert next question ask for

What method did party bosses use to maintain the power of their political machines?

How did the results of wwi benefit the u.s.?