You know that young prime minister Canadians elected in 2015?

One of his campaign promises was that he would legalize recreational marijuana, and guess what, he actually followed through.

So yes, Justin Trudeau, the 46-year-old leader of the Liberal Party, is not just a pretty face with "fake" eyebrows.

The Senate-approved Cannabis Act passed on June 19, making the possession and selling of marijuana legal after almost a century of prohibition.

All this bill needs is royal assent, which is approval by the Sovereign, but that's a guarantee since royal assent is just a formality in the Commonwealth country.

That means Canadians aged 18 and older will be able to purchase marijuana like they do tobacco and alcohol.

This is MAJOR news. Not just for Canada, but for the U.S. too.

Cannabis for medicinal purposes is legal in 29 states. Only nine states have legalized both medicinal and personal cannabis use.

Despite being binded to international drug treaties, Canada has gone forth on legalizing the use of recreational marijuana.

Does that mean these laws are just words on paper? That can't be good...

Backtrack to 2016, President Donald Trump supported legalization while on his presidential trail, saying that it "should happen."

In mid-April, Trump was all for states deciding on how to regulate marijuana, which could be a major boost for the legal pot industry in the country.

This might pave the way for federal legalization, but no one knows if and when that will happen.

Everything's up in the air now, but Canada is making the world think differently about just how dangerous marijuana use is for the adult population.

And what this means for the relationship between these two neighboring countries? Only time will tell.

Some Americans have reacted to this global news.

Democratic Senator Kamala Harris thinks marijuana should be legalized at the federal level.

She signed onto the Marijuana Justice Act and continues to keep fighting to make this a reality in the U.S.

"It's the smart thing to do, it's the right thing to do, and I know this as a former prosecutor, I know it as a senator and I know it when I just look at what we went as a country and where we need to be instead of where we've been," she told NowThis.

She believes the legalization of marijuana will create a investment opportunity for "communities who have disproportionately felt the impact of the war on drugs."

Here's what a Twitter user had to say:

Do you think America should follow Canada's footsteps?

[H/T: BBC / Global News / CTV]

One 70-year-old grandmother claims marijuana has helped her throw out "all her pills." Click here to read more!