1. I am about running a regress in STATA including dummies. I have logged all variables in Excel but excluding the dummies and copied to STATA. Will STATA capture the dummy variables as dummies or I will have to manually define which ones are dummies and which ones are not?

2. The dummies variables include ECOWAS and AfCFTA, and a country like Nigeria belongs to both. Can Nigeria be given the dummy value for both ECOWAS and AfCFTA in the same regress or just one? This is because when I simulated the regress, the results were dissimilar.

3. Again, when I simulated the regress, it indicated the presence of serial correlation and based on the hausman test result, I have to choose the random effect model which is xtreg. Now to remove the autocorrelation bias, I am compelled to regress using the cluster and robust command. The Regress command I think is different from the xtreg command. I am not too sure whether I am doing the right thing and confused. I should be grateful if anyone could assist me in this regards. Thanks