Answer:
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
I am born in fear raised in truth and I come to my own in deed. When comes a time that I'm called forth I come to serve the cause of need.
I'm white and I'm used for cutting and grinding. When I'm damaged people usually remove me. What am I?
I am so delicious that I require a house to contain me.
I am very easy to get into,but it is hard to get out of me. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.