What options does the President have when it comes to approving or rejecting a bill?

Why was the battle of gaugamela an important turning point in alexanders conquest of persians empire

The idea of manifest destiny simply stated it was america's destiny to expand from the atlantic ocean to the pacific. the word "destiny" implies an idea that it was within our rights as a nation to expand. in a paragraph of 125+ words, explain what could be wrong with that idea.

Why did the united states pass the neutrality acts