<span>civilizations
cultural exchanges
mercantilism
women's roles
language development
So all of those above this sentence were advanced by trade in the second millennium
Hope this helps!</span><span />
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
B.) Supplies were scarce and demand was great. Entrepreneurs provided the things the miners needed. That allowed the entrepreneurs to earn good profits.