Humans change the earth’s surface by forming economic alliances political borders coordinate systems settlements

Which barrier to economic development is shown in the following examples?

Which modern technology has not made a great difference in the inuit way of life?

Which events occurred during the space race? check all that apply. (a) nasa was established. (b) yuri gagarin orbited earth. (c) the soviet union launched salyut. (d) the united states launched skylab. (e) the united states launched explorer 1.