Breaking a popsicle in half
The Cossacks is a group of Slavic people located between Ukraine and Russia that was created between the 14th and the 15th century by the emergence of 2 groups.
They played an important role in the 18th century during the Russian Empire, protecting its borders from Attacks, and participating in most of the wars.
They participated too in the Russian civil war in 1917, till they declared their independence in 1918.
We can still find Cossacks groups in Russia, Ukraine, United States, and of course other countries. They're considered as an ethnicity since 2010.
Hope this Helps! :)
B. He improved the steam engine, allowing it to be used in many
industries
Explanation:
- The first steam engine was built in 1698, and by the time Watt was born, the machines, perfected by Thomas Newcomen, were already pumping water from mines throughout the country.
- Sometime around 1764, Watt was given a model of the Newcomen machine to repair it.
- Realizing that it was impossible to repair her, he began to work to improve it.
- He added a separate condensation chamber that prevented excessive steam loss. He patented a new, improved model of a steam engine in 1769.
Learn more on James Watt on
brainly.com/question/2051606
brainly.com/question/4554309
brainly.com/question/879972
#learnwithBrainly
