When
Columbus sailed to the America’s in 1492 his ships carried hemp seed. This was in case of shipwreck so they would be able to grow crops for both their raw materials & as a source of nutrition. 90% of all ships sails and ropes have been made from hemp for thousands of years.
George Washington and Thomas Jefferson both grew hemp themselves and washington even lamented about not getting back early enough to separate the males and female plants. It appears our first president was smoking
cannabis as that would be the main reason to separate them by sex.
Thomas Jefferson was much more than just our Third president he was likely also our nation’s first drug smuggler having smuggled hemp seeds out of china and france back here to the colonies by the 17th Century. China (wanting to keep its monopoly), made it a death penalty offense to export any such seeds. That was hemp though, probably not as smokable at that point in time as any of the Indica strains we know about today but that would change over time too
The first drafts of the Constitution and Bill of Rights were also written on hemp paper.
Cannabis
Taken from Wikipedia:
This article is about the plant genus. For use as a psychoactive drug, see Cannabis (drug). For other uses, see Cannabis (disambiguation).
Cannabis

Common hemp
Conservation status

Least Concern (IUCN 3.1)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Cannabaceae
Genus: Cannabis
L.
Species[1]
Cannabis sativa L.
Cannabis indica Lam.
Cannabis ruderalis Janisch
Cannabis (/ˈkænəbɪs/) is a genus of flowering plants that includes three different species, Cannabis sativa,[2] Cannabis indica and Cannabis ruderalis.[1] These species are indigenous to Central Asia and the Indian Subcontinent.[3]
Cannabis has long been used for hemp fibre, for hemp oils, for medicinal purposes, and as a recreational drug. Industrial hemp products are made from Cannabis plants selected to produce an abundance of fiber. To satisfy the UN Narcotics Convention, some Cannabis strains have been bred to produce minimal levels of tetrahydrocannabinol (THC), the principal psychoactive constituent. Many plants have been selectively bred to produce a maximum of THC (cannabinoids) which is obtained through the dried flowers of Cannabis plants. Various compounds of the plant, including hashish and hash oil, are extracted from the plant.[4]
Globally, in 2013, 60,400 kilograms of cannabis were produced legally.[5] In 2013 between 128 and 232 million people are thought to have used cannabis (2.7% to 4.9% of the global population between the ages of 15 and 65).[6]