1,000+ keywords: if it’s just you or 2 of you, this is probably more than you can chew off. It’s not hard to gather 1,000 keywords though, so if you’ve got the time, the people and the inspiration, it usually does pay off to write a lot of meaningful content. Do make sure that all those keywords relate to your products or services as otherwise it’s nonsense and make sure that you’re structuring your site well around it.
As with any Split or Multivariate testing, modification of the visual elements can make a big difference. Similarly, testing different design elements based on the visitor’s location may enlighten about the funnel you’re testing. The way bright colors are interpreted by one culture on side of the planet may be vastly different to another. Think of holiday themes as an example, or national flags as another.
Another easy, yet possibly expensive, way of testing geo-location is using a PPC platform such as AdWords. You can set your campaign targeting to very specific locations and languages, as well as set the destination URLs of your individual ads. Similarly, this will require a set of landing pages for each campaign, but delivers results very quickly. You may be able to run a fast, data rich, and location-based conversion analysis with little more.

You may be wondering why these seemingly different strategies are included as one. The reason is that the strategy is the same: Getting the most out of your budget. The only difference is the tactics to achieve that strategy. Sure you may need to look at different metrics and dimensions of your campaigns to maximize your budget, but in the end you achieve the same thing.
When using the Keyword Explorer, Ahrefs will also produce the "parent topic" of the keyword you looked up, as you can see in the screenshot above, underneath the Keyword Difficulty meter. A keyword's parent topic is a broader keyword with higher search volume than your intended keyword, but likely has the same audience and ranking potential -- giving you more a valuable SEO opportunity when optimizing a particular blog post or webpage.