Question:  Interstate 69 (I-69) is an Interstate Highway in the United States nicknamed after an agreement signed by Canada, Mexico, and the United States, creating a trilateral trade bloc in what location?

Context paragraphs:
Interstate 69 in Tennessee: Interstate 69 (I-69) is an incomplete U.S. Interstate Highway passing through the western part of the U.S. state of Tennessee, serving the cities of Union City, Troy, Dyersburg, and Memphis.  State officials are considering building parts of I-69 as a toll road.  Currently (while unsigned), a 21 mi section of I-69 exists in the Memphis area.  Portions of a 22-mile section between Union City and Troy are under construction.

Interstate 69 in Texas: Interstate 69 (I-69) in the U.S. state of Texas is an extension of that existing Interstate Highway that will pass through the eastern part of the state and along the Gulf Coast to Victoria, where it will split into multiple segments with I-69E terminating in Brownsville, I-69C terminating in Pharr, and I-69W terminating in Laredo.

Interstate 69 in Arkansas: Interstate 69 (I-69) is a proposed Interstate Highway that will pass through the southeastern part of the U.S. state of Arkansas.  The only section of Future I-69 that is currently under construction is the 8.5 mi eastern leg of the Monticello Bypass.

List of suffixed Interstate Highways: Currently the Interstate Highway System includes seven suffixed routes that are signed: the Interstate 35 split into Interstate 35E and Interstate 35W at Dallas-Fort Worth, Texas; a similar split into Interstate 35E and Interstate 35W at Minneapolis-St.  Paul, Minnesota; as well as Interstate 69C, Interstate 69E and Interstate 69W in South Texas; in addition, Interstate 480N in Ohio exists and is designated as such on mile markers but is otherwise unsigned.  However, there were once many more, as the three-digit Interstates were not designated until after all major routes were assigned numbers, including some short connections and spurs.  (A few of the shortest, including I-190 and I-195, were assigned three-digit numbers almost immediately.)  Most were not equal splits like on I-35, but had the main route continue through, and often the suffixed route never returned to its parent.  In 1980, AASHTO abolished the majority of suffixes due to confusion, renumbering them as three-digit Interstates, but several that return to their parents were kept.  For example, Interstate 15E has since become Interstate 215, but both I-35E/I-35W and I-69 splits still exist.

North American Free Trade Agreement: The North American Free Trade Agreement (NAFTA; Spanish: "Tratado de Libre Comercio de América del Norte", "TLCAN"; French: "Accord de libre-échange nord-américain", "ALÉNA") is an agreement signed by Canada, Mexico, and the United States, creating a trilateral trade bloc in North America.  The agreement came into force on January 1, 1994.  It superseded the Canada–United States Free Trade Agreement between the U.S. and Canada.

M-79 (Michigan highway): M-79 is an east–west state trunkline highway in the central portion of Lower Peninsula of the U.S. state of Michigan.  The western terminus is about 3 mi southeast of Hastings at the junction with M-37 and the eastern terminus is in downtown Charlotte at the junction with M-50 and Business Loop Interstate 69 (BL I-69).  It passes through Quimby and Nashville, where there is a junction with M-66.  The entire highway is undivided surface road.  It has no direct access with Interstate 69 (I-69), although a sign for the highway is located on southbound I-69 at exit 61.

Interstate 69 in Michigan: Interstate 69 (I-69) is a part of the Interstate Highway System that will eventually run from the Mexican border in Texas to the Canadian border at Port Huron, Michigan.  In Michigan, it is a state trunkline highway that enters the state south of Coldwater and passes the cities of Lansing and Flint in the Lower Peninsula.  A north–south freeway from the Indiana–Michigan border to the Lansing area, it changes direction to east–west after running concurrently with I-96.  The freeway continues to Port Huron before terminating in the middle of the twin-span Blue Water Bridge while running concurrently with I-94 at the border.  There are four related business loops for I-69 in the state, connecting the freeway to adjacent cities.

Interstate 69: Interstate 69 (I-69) is an Interstate Highway in the United States currently consisting of seven disjointed parts with an original continuous segment from Indianapolis, Indiana, northeast to the Canada–US border in Port Huron, Michigan, at 355.8 mi .  The remaining separated parts are variously completed and posted or unposted parts of an extension southwest to the Mexican border in Texas.  Of this extension—nicknamed the NAFTA Superhighway because it would help trade with Canada and Mexico spurred by the North American Free Trade Agreement—five pieces near Corpus Christi, Houston, northwestern Mississippi, Memphis, and Evansville have been newly built or upgraded and signposted as I-69.  A sixth segment of I-69 through Kentucky utilizing that state's existing parkway system and a section of I-24, was established by federal legislation in 2008 but only a portion is signposted.  A section of the previously existing Western Kentucky Parkway from Eddyville to Nortonville was approved and signposted in late 2011, with the Pennyrile Parkway between Nortonville and Henderson being signed as I-69 in 2015.  This brings the total length to about 680 mi .

Interstate 69W: Interstate 69W (I-69W) is a proposed north–south Interstate Highway running through South Texas in the United States.  The freeway begins northeast of the middle of World Trade International Bridge in Laredo and ends at I-35.  In the future, I-69W will head northward for 180 mi before terminating near Victoria as both I-69E and I-69W merge to form I-69.  For its entire length, I-69W runs concurrently with US Highway 59 (US 59).

Business routes of Interstate 69 in Michigan: There are currently four business routes of Interstate 69 (I-69) in the US state of Michigan.  Designated Business Loop Interstate 69 (BL I-69), they are all former routings of I-69's predecessor highways, US Highway 27 (US 27), M-78 or M-21, in whole or in part.  The BL I-69 in Coldwater and the one in Charlotte were both parts of US 27 before the freeway bypassed those two cities in 1967 and the early 1970s, respectively.  The BL I-69 through Lansing and East Lansing was previously part of M-78 and Temporary I-69 until it was redesignated in 1987.  Before 1984, the loop in Port Huron was originally part of M-21 and was initially a business spur numbered Business Spur Interstate 69 (BS I-69).  It was later redesignated when it was extended to run concurrently with that city's BL I-94 which was originally part of I-94's predecessor, US 25.  Each business loop follows streets through each city's downtown areas and connects to I-69 on both ends, giving traffic a route through the downtown and back to the freeway.

Supporting paragraphs: Interstate 69 North American Free Trade Agreement
Answer: North America