Foreign trade acts as an "engine" of economic growth in three key ways: 1) It enlarges a country's market for exports, leading to greater production and utilization of resources; 2) Expanding exports provides more employment opportunities and economies of scale, lowering costs; 3) Access to global markets encourages innovation as businesses compete with international counterparts, improving efficiency and productivity. For example, the opening of the Suez Canal increased India's exports of commercial crops like cotton and tea, fueling economic growth. Export processing zones also create jobs and incomes, stimulating demand and further domestic manufacturing. Overall, specialization, competition and technological adoption spurred by foreign trade can power economic expansion.