Answer:
British mathematician William Bourne made some of the earliest known plans for a submarine around 1578, but the world’s first working prototype was built in the 17th century by Cornelius Drebbel, a Dutch polymath and inventor in the employ of the British King James I. Drebbel’s sub was probably a modified rowboat coated in greased leather and manned by a team of oarsmen. Sometime around 1620, he used it to dive 15 feet beneath the River Thames during a demonstration witnessed by King James and thousands of astonished Londoners. Unfortunately, none of Drebbel’s plans or engineering drawings has survived to today, so historians can only guess about how his “diving boat” actually operated. Some accounts say it submerged via a collection of bladders or wooden ballast tanks, while others suggest that a sloping bow and a system of weights were used to propel the boat underwater when it was rowed at full speed.
Explanation:
Answer: Reason
You can read about that on wikipedia: https://en.wikipedia.org/wiki/Age_of_Enlightenment
Or here on history.com: https://www.history.com/topics/british-history/enlightenment
The freedmen, who wanted autonomy and independence, refused to sign contracts that required gang labor, and sharecropping emerged as a compromise. ... In exchange for the use of land, a cabin, and supplies, sharecroppers agreed to raise a cash crop and give a portion, usually 50 percent, of the crop to their landlord
It was mainly around the years of 1630 I believe.
Oklahoma is the nation's<span> third-</span>largest producer of<span> natural gas, fifth-</span>largest producer of<span> crude oil, and has the second-greatest number of active drilling</span>
