Challenges faced by natives during
european exploration included
a. disease
b. inferior weaponry
c. religious differences
d. all of the above

straight down to hell mate

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.

this question shoud be under spanish category, not