Which of the following systems of trade was most widely used in ancient river civilizations?

bartering

the exchange of coined money

free exchange

international trade

it refers to race, i am pretty sure this was a popular term in nazi germany or something.

answer

the speaker of ,’i want politician to make more of an effort for lgbt rights’, will be served well by joining an interest group.

explanation

an interest group is one that aims at influencing public policy on reasons derived by a common interest .in this case, lgbt rights are rights for the gay society which is a special group of individuals with specific interest concerning their relationship with other individuals. hope this !