Answer:
The battle for North Africa was a struggle for control of the Suez Canal and access to oil from the Middle East and raw materials from Asia. ... Oil in particular had become a critical strategic commodity due to the increased mechanization of modern armies.
When a country is more specialized, it's able to make something or know how to make something better. If two countries are specialized in different areas, they can each trade their advanced goods instead of each country making moderately good products.