In the United States, which of the following would increase energy efficiency?

List two inventions that were invented in the united states before the american civil war

How did the boston massacre contribute to the writing of the declaration of independence? a. many colonists began to see the british government as a source of protection. b. many colonists began to see the british government as a supporter of free speech. c. many colonists began to oppose the british government's building of forts on the frontier. d. many colonists began to fear the british government's harsh actions toward the colonies.

During the cold war, the united states was involved in certain regional conflicts due to fears later called the domino theory, which stated which concept?