If you do not own your own brand or design/patent you will find out that 99% of drop shipping businesses fail and fail fast. So instead of just drop shipping, create a brand and then find manufacturers that will put your name on the product and all the POS materials and packaging.

Join various platforms such as Upwork, People per Hour, FIVR and offer your services.

Depends on your product. If it is food - go and give samples to potential customers. If it is a physical product - find the first customer, provide the product, utilize the feedback to improve and get a testimonial. For digital products - offer a free trial.

Specialize in niche markets or niche packages (i.e. yoga trips, academic trips etc). Once you get practice in handling one niche, you just keep adding niches.

Turo is a good platform if you can licence or copy it.

Consider looking into affiliate marketing programs.

1) Language 2) Time zone 3) Cheaper competition from Africa and Far East 4) Culture 5) Track record

You will need to start small. If you have a garden use that to raise some chickens from scratch. If you don't have a garden, make a deal with a farmer to use some land to raise chickens. You can sell some of the eggs and use others to get more chickens by letting them hatch. Protecting the chickens will be a major issue in the beginning. Alternative is to raise money to rent land and build coops and get an initial amount of chicks.

Social enterprise and "most profitable" are in conflict with each other. It may be best if you focused on one or the other and once the idea works, then either make it profitable or add a social component. Trying both at the same time has a very high chance for failure.

Depends on your industry and target customer. As a no-revenue start-up I would not spend more than $ 1,000. If it is a consumer direct item then I would put most of my marketing money into ppc ads and still less than $ 1,000 for SEO.