Which of the following contributed most to early people's ability to produce food?
a. hunting of wild herds
c. the ability to make fire
b. the end of the ice age
d. metal tools

All of the following changes typically happened in colonies as a result of imperialism, except: a. cultural practices were outlawed. b. they became more economically self-sufficient. c. european nations built modern infrastructure, including railways. d. the european language became the language of government and education.