The company’s success is all the more exceptional given the obstacles Ketchell and his team have faced—and continue to face—because of the U.S. immigration system.

Thomas Ketchell is the co-founder of HSTRY, a tool that allows students and teachers to create interactive timelines documenting historical events. HSTRY has been incredibly successful, in the United States and across the world, despite the fact that Thomas’s co-founders in Chile and Belgium have been unable to obtain American visas.

Thomas Ketchell hopes to transform America’s education system through a simple digital platform. The Belgian native is the CEO and co-founder of HSTRY, a tool that allows students and educators to create free interactive timelines—similar to those on Facebook or Twitter—documenting historical events. Ketchell first came up with the concept in 2012, while he and his co-founder, Steven Chiu, were living in Beijing. To bring attention to the city’s severe air pollution, they created a fictional character who “live tweeted” the 1952 Great Smog of London—a period during which 12,000 Londoners died from toxic smog exposure. The event was picked up widely in the British press and Ketchell and Chiu realized they could use the idea to build a powerful educational tool that would help students better understand historical events.

In 2013, the pair returned to Belgium and founded HSTRY. Despite the company’s immediate success in Belgium, Ketchell believed there would be even more opportunities in the United States. “America’s schools are home to 10 million tablet computers, compared to just 1,200 in Belgium,” Ketchell says, adding that there is “far more funding available for innovative education startups in America.”

Since HSTRY’s official U.S. launch in March 2015, the company has enjoyed great success and today, it is used by more than 150,000 individuals in 5,000 schools across the country. Through its social-media style design, HSTRY allows the 21st century student to explore—and present—historical content in a familiar format. In doing so, the tool helps make history education more interesting by engaging students in a way that traditional methods do not.

The company’s success is all the more exceptional given the obstacles Ketchell and his team have faced—and continue to face—because of the U.S. immigration system. Although Ketchell was able to secure a high-skilled H-1B visa through the Global Entrepreneur in Residence (GEIR) program, his two co-founders have not been as lucky and are currently based in Chile and Belgium. “This has been a huge obstacle,” Ketchell says, “For a new company like ours, it’s so important for the team to be in one place—and travel between continents is incredibly time-consuming and expensive.”

Despite these obstacles, Ketchell and his co-founders have big plans for the future: “We already have educators using our platform in 136 countries, but we want to keep growing and eventually reach millions of educators and students across the world,” he says. “Our vision is to help students collaborate and interact in solving problems and, in the process, become better global citizens.”

HSTYR joined the VDC in November 2015, at the conclusion of its participation in the LearnLaunch Accelerator. According to Thomas:

“We have been strong advocates at HSTRY for immigration reform and work closely with the folks at FWD.us and the American Immigration Council. We were told of the opportunity offered at the VDC by FWD.us and were delighted to have been chosen for the GEIR program.”