Historians use terms such as A.D, B.C, decade, and century to refer to periods of time. The correct answer is B, periods of time.
Labor unions fought for reasonable working hours, safe working environment, and, better wages. Child labor was also stopped at that time and improved health benefits for injured or retired workers.
Answer:
Mary Winston Jackson (1921–2005) successfully overcame the barriers of segregation and gender bias to become a professional aerospace engineer and leader in ensuring equal opportunities for future generations. Mary Jackson was born in Hampton, Virginia, and attended the all-black George P.
Physical Geography is the study of the surface’s natural features and processes. This could include land formation, distribution of plant and animal life, as well as climate.
The materials for the Ur ziggurat were bricks of mud and a material called bitumen. If the bricks were stacked with only mud between them, they would not have lasted long.