Answer:
Cambrian
Explanation:
The earliest ancestors of about half of all extant animal phyla can be traced back to the CAMBRIAN explosion.
Answer:
C He let them set the terms on their land
Explanation:
Senate, and the house of representatives
They got the Council of Plebs which held tribunes.They got to veto government decisions,allowed to be consoles, and marriages between plebeians and patricians were made legal.