Nice story for a sale but Colombian strains were brought by American pharmaceutical companies in the early 1930s for developing strong pharmaceutical strains.Originally those strains were from Kalimantan.After the prohibition in 1937 those strains never left Colombia and found their way to other countries like Brazil or Panama.
I don't know about the Colombian/Panaman origins or if it could arrive from other sources as Borneo but according to different sources of brazilian historians (Pedro Correa e P. Rosado), its clear that cannabis arrived to Brazil coast back in the 1500s, with the Portuguese ships of slaves from Angola. In 1560 the Quicongo and Quimbundo african slaves brought seeds hidden in their loincloths and even amulets.
In fact, the brazilian terms for cannabis herb have an african origin (same that happened with Africa or Jamaica and Indian ganja/bhang) and originated in the afro-brazilian Quimbunda cults and dialects that came from the old Portuguese "Reino do Congo", nowadays divided between Angola, Democratic Republic of Congo and Republic of Congo.
This terms are widely in use both in Brazil and Africa, where the herb is still known as diamba, liamba, maconha or even fumo d'Angola (angolese tobacco).
In the time of sugar cane cultivation, slaves were allowed to grow the herb between the aisles of sugarcanes for their personal use. Later the farmers started to smoke until the Brazilian Inspectorate for Narcotics, Drugs and Mystification started to ban it to marginalize the poor populations that smoked the diamba. Funny thin was that "Indian Cigarettes" were still sold freely for medical reasons: “Respiratory problems, snoring, flatulence and squealing inhaling will stop almost at once; abundant expectoration occurs almost immediately, making breathing easier, calming the cough, allowing a reinvigorating sleep that end all the tormenting symptoms”