Final answer:
Concurrent powers are shared by both national and state governments and include taxing, constructing roads, and making laws.
Step-by-step explanation:
Powers such as taxing and constructing roads that belong to both the national and state governments are called concurrent powers. These shared responsibilities mean that both levels of government can levy taxes, establish court systems, make and enforce laws, construct roads, and provide education, among other functions. This division of power ensures that citizens are governed by two levels of authority, and both federal and state laws must be followed.