What was the significance of the clean air act of 1970?

Which of these did the soviet union do in 1961? it built a wall through berlin to keep people from moving to the west. it used force to destroy a wall the united states had built in berlin. it convinced the british and french to merge their zones in berlin with the soviet zone. it threatened to bomb berlin if the united states did not leave within 30 days.

What is one important quote from each of the following philosophers and what do they each mean? thomas hobbes, john locke, and baron de montesquieu

¿how a native american might have responded to jackson's policy to move native americans east by force? use these words in your treaty, trail of tears, supreme court.