There used to be a "guideline" of sorts when it came to defining what types of cigars were produced in their respective countries of origin. For example, Dominican and Mexican-made cigars were generally considered milder in flavor, whereas Honduran and Nicaraguan cigars were considered stronger in flavor. No doubt, tobaccos grown in the latter countries, especially Nicaragua, tend to have a naturally fuller flavor, and that is one of the reasons Nicaraguan tobacco is often added to a blend to give a little more power.
Today, with manufacturers in all of the cigar-producing nations using a variety of tobaccos in many of their blends, the country of origin is not as important to cigar smokers as it once was. Ironically, Fuente Fuente Opus X cigars, which are made with an all-Dominican-grown leaf blend, are among the fullest-bodied cigars. So, it's not necessarily the country of origin that defines a cigar's strength, but the leaves and how they're cured.
With regard to the "style" of a cigar, country of origin does play a role. For example, Cuban "style" cigars are made with all Cuban-grown tobacco, which has its own distinctive flavor. Therefore, the all-Dominican-leaf Opus X cited above could be considered "Cuban style." The term used for cigars made with leaves all from one country is puro, pronounced "poo-ROW?." And as you would expect, there are Dominican, Honduran, and Nicaraguan puros.
Generally speaking though, these days cigar smokers tend to be less concerned with a cigar's style or country of origin, and more concerned with quality and flavor. This is one of the reasons most cigar manufacturers use tobaccos from a variety of countries in their cigars. These countries are not limited to The DR, Honduras, Nicaragua, Mexico, Indonesia (Sumatra) and the U.S. (Connecticut Shade & Broadleaf) either; manufacturers often use tobaccos grown in Ecuador, Brazil, Colombia, Peru, and in the case of CAO's "Italia" selection, Italy, as well. Or, take the Drew Estate "Natural" selection, which also uses tobaccos from Italy, Spain and Turkey.
Moreover, there are cigars made in Honduras with only Nicaraguan-grown leaf. Would that be a Nicaraguan puro even though it was made in Honduras? Technically speaking, yes, but that example, plus the others cited above, says that country of origin is insignificant, or at least, secondary.
In a business where Cuban puros were once the rage (and in many corners still are), it's refreshing to know that with manufacturers using a variety of tobaccos in their cigars, cigar smokers have a virtually endless supply of taste experiences available to them.