Travelers between canada and the united states must on goods brought in from the other country.

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

Which year held a congressional election and a presidential election