What are the two riskiest investments

One way in which the european union encourages trade among countries is through the use of

Though most presidents have claimed affiliation with a christian church, the only roman catholic president has been a) abraham lincoln. b) john f. kennedy. c) george washington. d) franklin d. roosevelt.

Imagine you are driving down the highway and reading a sign that states save the planet don't litter which technique of policy enactment is being used