United States, under section 401 of the Tariff Classlfication Act of 1962 and in inplementation of section 5 of the Trade Aqreements Extension Actof 1.951i The Uni.ted States drew up a "black listn as a threat to mercbant vesselscalling at Cuban ports t fn October, the United States decreed a naval blockade of Cuba. Cuban Assets Control Regulations (C.I'.R., title 31, part 515) approved, estabLishing r6girne applicable to all trade and financial operationgrelating to Cuba, The United States State Departnent. threatened Spain over economicrelations wi th Cuba t The Department of Commerce imposed a complete ban on shipping offoodstuffs and drugs to Cuba. The United states reconfirmed the prohibition on travel to Cuba bv United States c i ti zens.L967196I r97t L974A/ 40/596 Engl i sh Page 41 cuba withdrew from the International @ffee council because of discrinlnatory treatment lnstigated by the uni teal States. African swine fever ms tntroduced ' seriously affecting agricultural' sector of Cuban econony. The United States Trade Act again refused cuba (bst-favoured-na tion statust sections of the Act established polilical condiclons in support of its provi€iona. 1975 r983The United StaLes permitted trade with located in third countries, subject to from the Department of Commerce. The Internatlonal Developoent and lbodof funds authorlzed bt the Act for aidCuba by Unlted states subsidiaries the obtaining of an export licence Assistance Act Prohibited tbe use to Cuba.L977 L979 1980 l98rThe Trade Agreements Act extended measures previously imposed by 1974 Trade Act I Suqar cane blight r.as i,ntroduced into Cuba, causlng serious lo56es to 197 9 and 1980 harvestst A tobacco disease known as rblue mouldn was introduced into Cuba, causlng Ioss of more than 85 per cent of harvest. The United St€tes Department of the Treasury prohibited the lmport of sp€cial steelg contalning Cuban nickel .
**Analysis**
The text appears to be a historical account of the economic sanctions and trade restrictions imposed by the United States on Cuba. It mentions various events, such as the naval blockade, trade embargoes, and restrictions on travel and financial transactions. The text also touches on the impact of these sanctions on Cuba's economy, including the introduction of diseases and the decline of its agricultural sector. Given the focus on economic sanctions and their effects, it is likely that the text falls under the category of international trade and economic development.

**Category**
International trade, Economic development