Zambia’s central bank is proposing legislation to criminalize the use of foreign currencies for local transactions to stabilize the national currency, the kwacha. Those violating this could face up to 10 years in prison or hefty fines. The kwacha gained about 7% on Friday. The currency’s volatility has been influenced by factors including a prolonged debt restructuring process, fluctuations in copper production, and increased import costs due to a severe drought.