Both Bachenheimer and High Street Partners’ Katie Davies agree with Wennersten that there are many opportunities for technology entrepreneurs.

“The best opportunities abroad for Americans are technology-based businesses,” Davies said. “The cost of barriers-to-entry is often low, which helps technology sectors like medical devices, healthcare, biotech and other technology-based businesses. Most of our clients are business-to-business start-ups who have received funding in the U.S. and want to expand into new international markets. Most tech entrepreneurs are in their late-20s to mid-40s and well-educated.”

Bachenheimer pegs the average age of tech entrepreneurs at 39 and agrees that technology businesses are generally U.S.-based and interested primarily in expanding into new global markets. “International entrepreneurs are definitely younger, free to travel and take risks,” he said. “Those entrepreneurs expanding into other countries, though, tend to be a little older because they have already set up businesses in the U.S. and have the money to expand into new markets.”

Which countries are best for entrepreneurs? Bachenheimer says the United Kingdom, Chile, Ireland, Canada, Australia and New Zealand all have aggressive entrepreneurial programs. While Davies names the U.K., she also includes Germany, the Netherlands and Scandinavia in Europe and Singapore, Hong Kong and Australia in the Asia Pacific region. “Eastern Africa also has had an uptick,” Davies said. “Kenya and Tanzania in particular because their infrastructures are good and their economies are experiencing rapid growth.”

How can young American entrepreneurs improve their chance of start-up success? “I would highly recommend that they do their homework,” Bachenheimer says. “What are the country’s immigration laws as they pertain to working and starting a business? What are the employment rules? What are the tax rules? Do your due diligence thoroughly.”

Davies agrees: “Advance planning is everything. You have to understand the business environment. For example, Brazil is a huge opportunity market, but there are many challenges involving regulatory considerations, the compliance environment, taxes and, of course, the language, which should be a top priority for all American entrepreneurs who wish to start a business abroad.”

We asked both experts what single piece of advice they would give young American entrepreneurs. Davies said: “Do not let your heart rule your head. Do your homework and you can be successful.” Bachenheimer weighed in with, “Go spend some time in the country and develop a network.”

You can find more information and resources on starting a business abroad in each of our country guides under Work in the Starting a Business section. For details on how to obtain a work permit for each country we feature, look in the Immigration section under Move.