Explanation

Ceylon was changed into Sri Lanka on 22 May 1972

Sri Lanka: Asian island nation

Explanation

Explanation

Umar bin Abdul Aziz ruled as a caliph for only 30 months but during this short period he changed the world. His tenure was the brightest period in the 92-year history of the Umayyad Caliphate

Explanation

The 0-degree kine of longitude that passes through the royal observatory in Greenwich ,England is the Greenwitch meridian .

It is also called the prime meridian  

Explanation

Google purchased the site for $ 1.65 billion in November 2006 and has been a subsidiary of Google ever since.

Explanation

Find the prime factorization of 70

70 = 2 × 5 × 7

Find the prime factorization of 80

80 = 2 × 2 × 2 × 2 × 5

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the LCM:

LCM = 2 × 2 × 2 × 2 × 5 × 7

LCM = 560