you can as all western banks ave withdrawn this facility, if its not much say $500 then the only way i sugest is via letter post, making sure u send it recorded delivery with insurance and a tracking...
You should be careful of the purpose of the money transfer. While gifts from Iran or non commercial remittances from family are allowed, if the funds are being transferred in exchange for goods,...
Maybe, but FedEx is only for sending mail and packages. If you want to send money from the US to Ghana you should use money transfers such as Western Union and Money Gram.