 Many countries passed laws <unk> the manufacture and promotion of contraceptives . In spite of these restrictions , condoms were promoted by traveling <unk> and in newspaper advertisements , using <unk> in places where such <unk> were illegal . <unk> on how to make condoms at home were distributed in the United States and Europe . Despite social and legal opposition , at the end of the 19th century the condom was the Western world 's most popular birth control method . 
