When a U.S. investor purchases foreign stocks, what two things is he or she hoping will happen?

What are the key benefits of adding foreign stocks to a portfolio?
When a U.S. investor purchases foreign stocks, what two things is
he or she hoping will happen?

Explain the following statement: “Preferred stock is a hybrid
security.” Is the equation used to value preferred stock more like the one used
to evaluate a bond or the one used to evaluate a “normal,” constant
growth common stock? Explain