What is competition in the US Economy?

Iam not here to cheat, i just need to check my answer. how were incan commoners grouped within their social class? a. by gender and age b. by family rank c. by wealth and status d. by religious worship my answer is c. i believe this because slaves are at the bottom of the rank, whilst the emperor is above all.

What enabled the drastic increase in us troop development to vietnam between 1964 and 1965?

How did the shift to farming affect native american cultures?