B.He developed a philosophy based on asking questions.
A historical source is valid when it:
A. was written by a person who observed an event.
<h3>What is a historical document?</h3>
This is the term that is used to describe a particular document that tells us of the trail of events that have occurred in the past. That is the events that have the timeline of having happened over a long period of time.
They are most valid when the event is being talked about by a person that has first hand knowledge of what happened instead of telling stories of what they heard.
Read more on historical documents here: brainly.com/question/228934
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In the 17th century Europeans began to establish settlements in the Americas. The division of the land into smaller units under private ownership became known as the plantation system. Starting in Virginia the system spread to the New England colonies. Crops grown on these plantations such as tobacco, rice, sugar cane and cotton were labour intensive. Slaves were in the fields from sunrise to sunset and at harvest time they did an eighteen hour day. Women worked the same hours as the men and pregnant women were expected to continue until their child was born.
European immigrants had gone to America to own their own land and were reluctant to work for others. Convicts were sent over from Britain but there had not been enough to satisfy the tremendous demand for labour. Planters therefore began to purchase slaves. At first these came from the West Indies but by the late 18th century they came directly from Africa and busy slave-markets were established in Philadelphia, Richmond, Charleston and New Orleans.
Hope this Helps!
B most likely!! hope this helps
Cover crop roots hold the soil in place, protecting soil from wind erosion. Cover crops can also protect soil from the impact of heavy rainfall and runoff. Reduced erosion protects and improves water quality by keeping ag chemicals in the ground and out of drainage water.
