Answer:
A market for cats would have had a positive externality.
Because the cats would kill the rats on sight since that is their natural behavior.
However, it is interesting to mention, that the cat's killing has been more of a "mythic" aspect of this story, since it fails to take into account that since the black death was caused by the<em> yersinia pestis</em> bacteria, cats could have been also infected, and since their interactions with humans are greater than rats or fleas, the real outcome could have been totally unexpected.
Citizens were provoked by plans to cut public spending and raise taxes as austerity measures in exchange for a €110 billion bail-out, aimed at solving the Greek government-debt crisis at the time. So the correct answer is D.
Answer: Aggregate
Explanation: All these people who found themselves in the same place because of a certain occasion, and at the same time of course, but in that case, these people are most likely to see each other for the first time, or if not for the first time then they may have seen each other earlier in the passage, but there is no no connection between them.The only connection is that they are in the same place at the same time. It is an aggregate, therefore not a group of people, because all these people are caught by the music playing by these two musicians, so they stopped to hear them but are not connected to each other. Same as in a restaurant or market.
Brazil's current Constitution was promulgated in 1988 and completed the democratic institutions. The new Constitution replaced the authoritarian legislation that still remained from the military regime. In 1989 Brazil held its first elections for president by direct popular ballot since the 1964 coup.
These are somethings that happened to Brazil with there democracy
