Что сдесь вставить much\many .are there much\many chilndren on the beach ?

Are there many chilndren on the beach ? many - так как  many  (много) используется с исчисляемыми существительными, а детей мы можем подсчитать

Many,так как children-это исключение.

Russian national costume — existing for centuries, traditional clothes, footwear and accessories that was used by russians in their everyday and festive use. has noticeable characteristics depending on the region, gender (male and female), destination (holiday, wedding and casual) and age (children, maidens, married women, old women). while there is general similarity in cutting and in decoration techniques russian costume had its own peculiarities. in northern russia peasants wore clothing very different from the peasants of the south. in central russia wore a suit similar in nature to the north, however, in some areas you could see the suit with the characteristics of south russian clothing. a distinctive feature of russian national costume — a large number of clothing. clothing flare and swing. flare clothing worn over the head, swing was cut from top to bottom and fastened with butt hooks or buttons.