What is responsibility of Islam?

Islam is a religion for all humanity, as it says in the Quran (14:1).As most religions claim to offer guidance and morality to humanity,so does Islam.Islam goes a step further by giving solutions to problems of mankind.For instance polygamy helps in solving the problems of surplus women in America(7.8 million),Russia(9million more women than men),UK(5 million more)islam gives a modest solution for women by protecting them to be wives rather than be absorbed as victims of social injustice.Zakah or compulsory charity helps in equitable distribution of resources in the society, modesty and hijab or veil for both men and women prevent immorality and crime.Islam offers solutions and methodology to put into action these solutions,it promotes a jurisdiction to deal with criminals in order to reduce crime rate and it also encourages noble values and makes it an article of faith to observe them in order to establish social justice and harmony.