The Civilization got it start in China at ~~ The Yellow and Yangtze River Valleys.
The right answer is iron.
Let me explain: During the Civil War, the Confederacy wanted to acquire modern armored ships, therefore, gaining advantage over their adversaries. Somewhere around 1861, the Confederate Congress purchased ships called 'ironclads' from overseas, and a few moths later, they started working on constructing and converting their wooden ships to ironclads, by coating the sides of their ships with iron.
The goal behind this new defense strategy was to make it more difficult for heavy artillery to pierce the ships, thus gaining a new naval advantage over the enemy.
I hope this answer helps! Have a great week :)
I don’t know what this means
Try changing your location to what I am guessing is Russia
Answer:
Option: D. a mountain
Explanation:
A mountain is the only landforms on the earth that rises above its surroundings. Mountains created due to the moving of the tectonic plates on the crust. When two plates of the earth's crust crash into each other, the land pushes upwards and forms mountains. Mountains have steep, sloping sides and rounded or sharp ridges.
At the time of the arrival of Europeans, the indigenous population was estimated to be just below 40 million people. After the contact with European diseases it is said to be significantly reduced and estimates suggest that in 1650 this population could be around 8-9 million people. (this is just an estimate, but it's the best from all the offered answers).
