Below you can find the 2 main methods of making this friction & striking sparks were discovered just after the last glacial period Jeopardy Words Answer. The answer to 2 main methods of making this friction & striking sparks were discovered just after the last glacial period has 4 letters. This clue belongs to the Archaeology category and is part of Jeopardy Word Level 2562. If you scroll near the bottom you will find other clues and answers part of level 2562