Speed limits and drinking ages fall under the police powers of state government, yet the national government has established maximum speed limits and uniform drinking ages. How is it possible for the national government to encroach on the reserved powers of the states

Which sentence best represents the thesis of this article? a they challenge us to consider whether we can trust what we are seeing. b optical illusions may seem mysterious, but they are not unexplainable. c through science, we can learn how optical illusions work. d let’s take a look at three common optical illusions and explore the science behind each one.

Which of these was not a key difference between northern and southern states at the constitutional convention? wanting to protect states’ interests vs. a government with strict rules having more, larger cities vs. having fewer, smaller cities wanting to protect agriculture vs. protect industries having many enslaved people vs. using less enslaved labor

Why have the aztec ruins in mexico city not been dug up?