According to the age of discovery Prince Henry the Navigator

Although Prince Henry the Navigator was neither a sailor nor a navigator, he sponsored a great deal of exploration along the west coast of Africa. ... Henry is regarded as an originator of the Age of Discovery and the Atlantic enslaved people trade.

nafta and the union are used as a trade between other countries these   organizations are used as spokes person for the country

your answer is 1930's

explanation

this is just around the time the great depression was starting and putting the us ecnomy into ecnomic failure causing the goverment to take a much larger rule to try and pieace it back together