Gdyby ktoś byłby uprzejmy i sprawdził to streszczenie, będę bardzo wdzięczna!
Probably man's observing of a flexible sapling had given birth to an idea of creating the bow. So it was made of a sapling's branch and a string. at first stones and sticks were thrown from it. Then man created arrows. People became more powerful when animal teeth and other sharp objects were used on the ends of their arrow-sticks.