After centuries of Danish, Swedish, German, and Russian rule, Estonia attained independence in 1918. Forcibly incorporated into the USSR in 1940, an action never recognized by the US, it regained its freedom in 1991, with the collapse of the Soviet Union. Estonia has a modern market-based economy with strong ties to the West. It is a WTO and EU member and pegs its currency to the euro. The economy benefits from strong electronics and telecommunications sectors and is greatly influenced by developments in Finland, Sweden, and Germany, three major trading partners. The current account deficit remains high; however, the state budget is essentially in balance, and public debt is low. A balanced budget, almost non-existent public debt, flat-rate income tax, free trade regime, fully convertible currency backed by currency board and a strong peg to the euro, competitive commercial banking sector, hospitable environment for foreign investment, innovative e-Services and even mobile-based services are all hallmarks of Estonia's free-market-based economy.