What was the name given to the belief that life is made up of competitive struggles and only the fittest survive

According to this contract, when will the sharecropper receive his payment?

How does the existence of a site like catus hill demonstrate the challenge that archaeologist face when making theories?

The french and the dutch establish colonies in north america to, a. establish sugar plantations. b. spread catholicism to the native americans. c. extract gold and silver from the aztec empire. d. trade with native americans for furs.