27. Which of the following describes a "negative effect of China's geographic features forming natural barriers? a. China's geographic features limited expansion into other lands and isolated them from other cultures.

b. China's geographic features made it easier for Chinese civilizations to trade with outside civilizations.

c. China's geographic features made it easy for outside invaders to attack.

d. China's geographic
features promoted expansion into other lands and made it easier to share ideas with other
cultures.

The graph shows the federal budget from 1980 to 2010. in which period did the federal budget show the greatest deficit? 1980 to 1990 1980 to 2000 1990 to 2000 2000 to 2010

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends

What was an important effect of blackstone's commentaries of the laws of england? a. people in england no longer had to pay taxes b. common law became more accessible c. judges were able to rule as they d. the rights of the accused were done away with.