Originally posted by @Jeff Mason :
Set up domain redirects with your domain registrar. Only the domain you are forwarding to will rank in search results.
You're better off creating working 2-3 page websites for each market then redirecting one of those pages to an equivalent page on your primary domain. Otherwise your redirected market specific domains will never rank in search results and there will be no point in having them.
Go to moz.com to learn some basic SEO.
I'd counter the redirect with an alias. When you do a redirect users will see the address bar change to the URL they're being directed to. This could lead to suspicion on the users behalf if they're not understanding why this is happening. Using an alias avoids this behavior.