claim: The Africa Cup of Nations is the reason for the founding of Africa.
evidence: Blue Chip Stamps started as a trading stamps company called `` Blue Chip Stamp Co. '' They were a competitor to S&H Green Stamps .. trading stamps. trading stamps. S&H Green Stamps. S&H Green Stamps. Blue Chip stamps were a loyalty program for customers , similar to discount cards issued by pharmacies and grocery stores in the digital era .. loyalty program. loyalty program. A customer making a purchase at a participating store -LRB- typically grocery stores , gasoline stations , and pharmacy chains -RRB- would be given stamps in proportion to the size of the purchase .. The stamps would be issued by machines next to the cash register .. cash register. cash register. The customer would paste the stamps -LRB- which could be licked or moistened with a sponge , like postage stamps -RRB- into books .. postage stamps. postage stamps. The books could then be taken to a special redemption store and redeemed for merchandise , such as lawn furniture , dining tables , table ware , and many other items .. The redemption stores did not keep a full inventory of items , but would order from a catalog on behalf of the customer .. The loyalty program was paid for through the overall pricing of goods in the participating stores .. loyalty program. loyalty program. When the recession of 1980 hit , cost cutting caused the program to lose popularity , and the growth of credit card transactions competed for retail margins .. As computerization developed , less cumbersome loyalty programs were developed .. These programs required less of a customer 's time and also had lower operational costs  : they did not require retail outlets for the redemption of stamps , and the discounts often were restricted to the products offered by the participating stores , i.e. , the participating stores were discounting merchandise that they would keep in stock even without the reward program .