Which of the following systems of government allows citizens to hold only one form of political opinion?
a. a parliamentary republic
b. a single-party government
c. a presidential republic
d. a constitutional monarchy
which of the following would most likely remain the same across us states?
a. business laws
b. forms of currency
c. education systems
d. highway systems

1. b. a single-party government.

A single-party government is likely to only allow its citizens to hold one particular political opinion. This is because any dissenting opinion is likely to weaken their control over the population. Therefore, countries with a single-party government are usually not considered functioning democracies.

2. b. forms of currency

It is unlikely that currency (the US dollar) will not remain uniform across all states. Having different types of currency would make commerce and trade difficult across state lines. Moreover, it goes against the primary purposes of the Federal Reserve System.

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.