Britain and France, standing by their guarantee of Poland's<span>border, had declared war on Germany on September 3, 1939.</span>
Answer:
246 years
Explanation:
As far as the institution of chattel slavery ; the treatment of slaves as property ; in the United States, if we use 1619 as the beginning and the 1865 Thirteenth Amendment as its end then it lasted 246 years, not 400.
Answer:
It affected the way of living
Explanation:
It is A. city blocks laid out in a grid pattern and C. a standardized system of weights and measures.