One reason could be that since England has colonized most of the countries in the past, the English language has been spread around. Another reason would be since English speaking countries like the US and Britain are powerful economically, knowing English is very important when making trades and business deals.
The Letter
Dear Mother,
Staff Sargent has informed me I will depart at 8:00 A.M tomorrow. Unfortunately, I don't know if I will be making it home anytime soon. Although, don't be discouraged if I don't make it back.
Farewell,
Soldier
Answer:9 years
Explanation: The French war began in 1754,and ended in 1763.
The modern Agricultural Revolution can be understood to refer to the introduction of machinery into revolution (= the start is the development of machines), which made the production more efficient and reliable.