Legalization has spread across the United States, all of Canada, and even other parts of the world. And in just two weeks, on October 7, Canada moves to Legalization 2.0 as more cannabis products like edibles and beverages become legal. The free market has been along for the ride. In 2015, the legal marijuana market was worth $5.4 billion. In 2017, that market exploded 57.4% to reach $8.5 billion. Last year, the legal marijuana market grew another 22% to reach $10.4 billion.

I’ve made it pretty clear to anyone who will listen that cannabis stocks are headed for a serious, long-term bullish catalyst: legalization. I’m talking full legalization across the entire United States. Right now, cannabis companies are operating under a legal headache. They’re allowed to sell medical marijuana in a lot of states and recreational marijuana in some states. Revenues are growing like crazy… but the U.S. government has NOT given its blessing. That creates problems for cannabis companies, and perhaps the biggest has to do with banking. Until we get federal legalization, most banks are not willing to deal with the risk and the “red tape.”

Today I’d like to tell you about a meeting I had recently here in Baltimore at our InvestorPlace office. I explained to our CEO, Brian Hunt, and the rest of our team how I’d developed a new income strategy – and that I thought the legal marijuana market was the perfect place to deploy it. People just kind of looked around at each other for a minute… then asked me to elaborate. I think they were willing to give me the benefit of the doubt – but they were definitely surprised. After all, marijuana companies are growing revenues like crazy… but most of them haven’t reached profitability yet. And without positive earnings, we’re just not going to see marijuana dividends.

One year ago this October, history was made. It signaled one of the biggest wealth-building opportunities of all time. A chance to score not a 10-bagger, but a 50-bagger. A chance to turn $10,000 into $500,000. You see, on October 17 last year, Canada made it legal for any adult to buy, possess, and use marijuana — making it the highest-profile country to permit the legal sale of marijuana for recreational use. That action confirmed what I’d been saying since 2014 — that legal marijuana was going to be a once-in-a-lifetime opportunity for investors. The marijuana market has exploded by 300% since I started pounding the table about it. And more is still to come.

The case study I shared yesterday here in MoneyWire about Estonia – and how this tiny nation is lightyears ahead of us, thanks to 5G – is a fascinating story. Today, I’d like to be a little more specific as to how to invest in 5G. I prefer a simple, elegant approach that has already proven itself in every other tech boom since the 1980s. There will be a lot of winners in the race to 5G. For example, one stock that could be up big in the years ahead is Nokia (NOK), one of the key makers of the hardware critical to the technology. But as 5G takes the world by storm and ushers in a new technological revolution, there’s about to be a WAY bigger opportunity.