Sofia says she will tell her kids about her role in the historical decision. Source: YouTube

The US Treasury has announced a woman would grace the country’s currency for the first time in over a century and Sofia, of Massachusetts, couldn’t be happier.

Last year, at the age of nine, she sent a letter to President Barack Obama lamenting the fact there were no women on the money and suggested a list of suitable candidates. While the White House responded to the fourth grader in agreement, she was surprised when she got a call from a Treasury employee this week telling her the good news.

“I’m really excited that they’re going to truly get a woman on currency,” she said. “I’ll probably tell my kids when I grow up that I was a part of making this happen,” she told ABC News in a TV interview.

The still unchosen woman, will feature on the $10 note from the year 2020, replacing Alexander Hamilton, the first secretary of the Treasury.

In her initial letter to the President, she suggested Hillary Clinton and the incumbent First Lady as potential choices. According to the Treasury, however, the only criteria is they must no longer be alive.

Treasury Secretary Jacob Lew said the woman would likely be “a champion for our inclusive democracy”.

Obama said he thought it was a “pretty good idea”. Source: Twitter

Following the letter, which Obama had mentioned in a 2014 speech about women and the economy, a group called Women On 20sstarted an online petition and corresponding campaign to take up the same cause as Sofia.

In May, the group conducted a pole of 600,000 people to find the ideal woman for what they hoped would be the new $20 bill. The 19th century African American rights activist Harriet Tubman was the winner and the petition was given to the White House and the office of the federal treasurer, Rosie Rios.

But it was the work of the group’s pint-sized ambassador that captured the media’s imagination.

Her role in the movement has also caused quite a stir in her fourth-grade classroom, reports Time. “Whenever there’s a report or something about me, I always show it to all my classmates and share it, because my teachers let me,” she told the magazine. “They say it’s really cool and really awesome.”

Her advice to kids like her is not to be afraid to act on issue they believe are important.

“They can do a lot of things, even if they’re kids,” she said.

A woman will appear on the US currency for the first time in over a century. Source: YouTube