Accent Marks

I'm not new to Macs, but new to knowing how to make certain marks when typing geographical locations.

Can someone tell me where to find these marks on my keyboard or do I need to cut and paste?

Pará
Maranhão
Rondônia

Safari > Edit > Special Characters

Well I'll just be darned. I never knew what that meant in the edit menu. Now I do. Thank you!!

You can also find quite a few by holding down option while you press the desired character - follow the instructions here Macintosh Accent Codes

For example:

á ñ ô

If you're using Lion, you can just hold down the key which will popup a little "tooltip". In that tooltip are all the accents and the button to push to get that accent. Here's an example of what happens when I hold down the "e" key:

Curiously, the same holds true for my Android phone. Go figure...

It does for IOS 5 as well