No country will make you travel incognito. However, if you are an Israeli in Iran or an American in North Korea, you may wish to for your own reasons.
Bear in mind, entering a nation under false pretenses is always a crime, and disguising yourself after legitimate entry may be a crime. Check with an attorney for advice specific to your situation.
in other words yes
The answer should depend on whether your home country has an extradition treaty with the country where you plan to travel.
You could travel to places like Cafe Brazil and Chick-fil-A if you are using too many coupons because otherwise you will be caught.
North Korea
yes
no
If you mean incognito then yes
The Nazis would travel by plane or boat when they invaded countries
Who do you propose would do the forcing?
So that the country would not be taken over or forced into a war
south west
December to May
most chefs travel for example if they were a chef they could train to cook Italian or french cuisine then they would be able to travel to those countries