So lets say you found farming tools then a secondary source would be like telling how they farmed so you can see how they used those tools. in an example say i said that the native Americans rode on horses were did they ride those horses? i hope this helps
Answer: The gas laws were developed at the end of the 18th century, when scientists began to realize that relationships between pressure, volume and temperature of a sample of gas could be obtained which would hold to approximation for all gases. Gases behave in a similar way over a wide variety of conditions because they all have molecules which are widely spaced, and the equation of state for an ideal gas is derived from kinetic theory. The earlier gas laws are now considered as special cases of the ideal gas equation, with one or more variables held constant.
Explanation:
<span>The decade that the headline that is written, African Freedom Spreads: Congo, Kenya, Algeria Achieve Independence is during the 1960’s which is letter c. It is because during the 1950s, rebels started returning in the guerrilla warfare in which british crushed the rebellion that is happening in which led to their independence as well as the Algeria from france, congo from Belgium and Nigeria. All of this had occurred in the 1960s.</span>
US growth accelerated during this time "<span>b. during the industrial Revolution". The United States along with Great Britain was one of the power houses of the Industrial Revolution, which increased output and subsequently GDP greatly. </span>
Oracle bones were used during the Shang dynasty to predict the future. The bones were used to process fortune-telling. They were used by Shamans, religious consultants that collaborated with gods and mythical people. The Shamans used the bone's cracks to demonstrate patterns or blemishes to anticipate the future.
