Watch As DNA Testing Reveals Just How Connected People From All Over The World Really Are

The ending couldn't be more moving.

Where are you from?

It's a simple question with a much more complex answer than you might think, as 67 strangers learned in a powerful new video from travel agency Momondo.

Before asking the group to spit in vials for use in DNA testing, interviewers asked the participants about their individual backgrounds and heritages. Everyone seemed to know their family tree perfectly, and predicted their results would show little diversity... and zero surprises.

"It's going to be, 'Oh yeah, you're French, and wait, your grandparents are French, and, wait...," one woman said.

"I'm 100 percent Bengali," a man said of his own background.

Some also suggested their personal experiences had led them to think less of certain other nationalities. A British man said he wasn't a "fan" of people from Germany. A Kurdish woman said that she hated Turkish people, before quickly clarifying that she meant that she hated the government.

Weeks later, the group was brought back together. Then, in front of the 66 other participants, each opened envelopes that showed them the breakdown of where they were from.

Their reactions said it all.

The test results within the envelopes had made the world, with all its divisions and its distrust, just a little bit smaller. The British man found out that in addition to being 30 percent English, he was 5 percent German. The Kurdish woman learned that she had Turkish heritage. Everyone was surprised and moved.

"This should be compulsory," the French woman said after seeing her results. "There would be no such thing as extremism in the world. Who would be stupid enough to think of such a thing as a pure race?"

Momondo began the project by partnering with research company Cint, who conducted a global survey of 7,200 respondents, including 400 from the United States. The survey results suggest that as many as six out of 10 Americans believe their ancestry can be traced to a maximum of three countries.

What those Americans didn't know was the number is actually far greater, and our diversity is far easier to see.

"In a way, we're all kind of cousins, in a broad sense," one of the interviewers observed in the video.

Be sure to watch the big reveal below — and grab a box of tissues for the final surprise.

Momondo is continuing the "DNA journey" by giving over 500 people a chance to find out their DNA history, and enter a contest to win trips to wherever they are from. Both the video and the contest serve as a strong reminder that the ties that bind us together are far stronger than those that would pull us apart — and that some of them are even found in the sequences of our DNA.