<prompt> Yimuphi umbuzo othi: I-North American Free Trade Agreement i-NAFTA iyisivumelwano esisayinwe yiCanada, iMexico, ne-United States, esakha ibhulokhi yezohwebo yamazwe amathathu eNyakatho Melika.? Isihloko siSivumelwano Sokuhwebelana Kwamahhala saseNyakatho Melika.  <response>: Yini i-North American Free Trade Agreement? 