Which new material did Neolithic people invent and use for making tools

The new material that Neolithic people invent and use for making tools is bronze

hello there, can you add the "following" multiple choices

your wrong i made a 2.34 out of 4 the answers are 1st qeustion all of them are correct. question 2 the han emperors chose smart, victorious men to work in the government. question 3 during the han dinasty, the teaching in the analects of confucius set the tone for public life. question 4 on a and b are correct.