Razor not Rendering Tag Helper

Hello,

I'm attempting to use Tag Helpers to render a select menu.  However, when I run the program, it displays in the HTML:

<select asp-for="Country" asp-items="Microsoft.AspNetCore.Mvc.Rendering.SelectList">
                                            <option>- Select a Country -</option>
                                        </select>

I have TagHelpers installed in NuGet, and I have @addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers in my _ViewImport file.

Any ideas would greatly be appreciated.

Thanks!