Answer: 
Explanation:
As we are given to calculate :
= ?
1 million is equal to = 
1 trillion is equal to = 1 million million = 
Putting in the values we get:
Thus the correct answer is
The ancient Sumerians modified their environment to increase food production by<span> digging irrigation canals which was a very big part of European development. </span>
Answer:
At the same time, Dubrovnik became a cradle of Croatian literature. The entire city was almost destroyed when a devastating earthquake hit in 1667.
Plate tectonic is a scientific theory that says the Earth’s lithosphere is divided into several plates. The plates glide over the mantle. In early 20th century, this theoretical model builds on the concept of continental drift. It was first proposed by the scientist Alfred Wegener in 1912. After seafloor spreading was validated, the theory was accepted by the geoscientific community.
