2.) If Columbus hadn't brought back new and interesting food, our food today wouldn't be more diverse.
3.) If I hadn't moved to India, my taste in food wouldn't be different now.
4.), If the weather conditions were terrible, the farmers didn't have a good harvest.
5.) If Julia Child hadn't wrote a recipe book, I wouldn't be able to cook French food all the time.
I'm not quite sure why this is categorized under English, but I'll still help you. :)
When you're accustomed to a place, you've practically memorized every step you must take and don't even think about how to get there, places around the area, or back home from there. Even following a route you may not have necessarily explored before is simpler because you're familiar with the rest of the area. This is a psychological trick known as latent learning.
It's quite fascinating, and many of us take our subconscious mind for granted. Basically, you store useless information into the back of your mind that will be useful later on. You may not use it until that moment, but it is there.
I would need to see what type of question you are asking
