A sharp decline in President Johnson's popularity.
It was the Hydaspes River
A
Explaination::
For higher crop productivy; decreased use of water and fertillizer
<span>Advancements in navigation. The Gupta Empire were very advanced in the fields of technology, science and art. The scholar Aryabhatta calculated that a solar </span>year was 365.358, <span>he also calculated </span>pi<span> to the fourth decimal place at a </span>value of 3.1416. <span>Kings in the </span>Gupta empire<span> owned huge copper, gold, and iron mines, and made advancements in metalworking. </span>
The account of the travels of the Muslim legal scholar Ibn Battuta in
the first half of the 14th century reveals the wide scope of the Muslim
world at that time.
