what's the difference between a monarch and a president?

The difference between the two is a monarch is ruler of monarchy or the head of state of a constitutional monarchy, while a president is the head of state of a republic or a representative democracy.

A monarch may reign for life or until abdication. In choosing the next monarch, hereditary succession within one patrilineal family has been common.

A president can only be in his position depending on the term length/limits on his country. In choosing the next president, election is held and the one with the majority will be the president.

That's true, it's a belief in one god

In the midwest because it has more moderate climate than the north or south west which makes farming far easier.