How do I fetch data from two table in two different dropdown list

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C#7.1

In .net mvc framework entity
How do i fetch data from two table in two different dropdown list and insert this data as a foreign key in third table like i have table1 Car and table2 Carfeature and table3 CarFeatureMapping.
i have to fetch this data from table1 and table2 as a dropdown list and insert both table foreign key in table3

What I have tried:

i have model file , contoller file . irepositroy file , repository file , and html file

Controller file ...

using InventoryManagement.Models;
using InventoryManagement.Repository;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace InventoryManagement.Controllers
{
    public class CarFeatureMapController : Controller
    {
        private readonly ICarFeatureMapRepository _carfeaturemapRepository;
        private readonly ICarRepository _carRepository;
        private readonly ICarFeatureMasterRepository _carfeaturemasterRepository;

        public CarFeatureMapController(ICarFeatureMapRepository carfeaturemapRepository ,
            ICarRepository carRepository, ICarFeatureMasterRepository carfeaturemasterRepository)
        {
            _carfeaturemapRepository = carfeaturemapRepository;
            _carRepository = carRepository;
            _carfeaturemasterRepository = carfeaturemasterRepository;
        }

        public ActionResult Index()
        {
           List<CarFeatureMap> maplist = _carfeaturemapRepository.GetAllCarFeatureMap();
            return View(maplist);
        }

        [HttpGet]
        public ActionResult Create()
        {
            return View();
        }

        [HttpPost]
        public ActionResult Create(CarFeatureMap cfm)
        {
            _carfeaturemapRepository.AddCarFeatureMap(cfm);
            List<CarFeatureMap> mapList = _carfeaturemapRepository.GetAllCarFeatureMap();
            return View("Index", mapList);
        }

        public ActionResult Delete(int MapId)
        {
            _carfeaturemapRepository.Delete(MapId);
            List<CarFeatureMap> mapList = _carfeaturemapRepository.GetAllCarFeatureMap();
            return View("Index", mapList);

        }
            
        [HttpGet]
        public ActionResult Map()
        {
            List<CarFeatureMap> mapList = _carfeaturemapRepository.GetAllCarFeatureMap();
            List<Car> CarList = _carRepository.GetAllCars();
            List<CarFeatureMaster> FeatureList = _carfeaturemasterRepository.GetAllCarFeatureMasters();
            CarFeatureMap carfeatureMap = new CarFeatureMap();
            List<Car> CarsList = Car.CarList;
            List<CarFeatureMaster> FeaturesList = CarFeatureMaster.FeatureList;
            return View();
        }

        [HttpPost]
        public ActionResult Map(int carId, int FeatureId)
        {
            _carfeaturemapRepository.Map(carId, FeatureId);
            List<CarFeatureMap> mapList = _carfeaturemapRepository.GetAllCarFeatureMap();
            return View("Index", mapList);

        }

    }
}

View HTML file..

@model InventoryManagement.Models.View_Model.CarFeatureMap
<div class="container">
    <form action="Map" method="post">
        <div class="row">
            <div class="col-25">
                <label for="makename">Car Make</label>
            </div>
            <div class="col-75">
                <select id="Make" name="Make">
                    @foreach (var Car in Model.CarList)
                    { 
                        <option value="@Car.CarId">@Car.Make</option>
                    }
                </select>
            </div>
        </div>
        <div class="row">
            <div class="col-25">
                <label for="makename">Feature Description</label>
            </div>
            <div class="col-75">
                <select id="Make" name="Make">
                    @foreach (var carfeature in Model.FeatureList)
                    {
                        <option value="@carfeature.FeatureId">@carfeature.FeatureDescription</option>
                    }
                </select>
            </div>
        </div>
        

        <div>
            <input type="submit" value="submit">
        </div>
    </form>
</div>