Chemica changes, because when a substance undergoes a chemical change, the substance splits up into two or more different things. Like when rust forms on a nail its because oxygen formed with the iron to form Iron Oxide. Hope I helped ^-^
Answer:
During the depression families would help each other with harvest, repair work, or give each other food.
Explanation:
During the great depression many people didnt have jobs..its kinda like whats happening now with corona lol.
Well, since one of the goals listed in the Preamble is to, "for a more perfect union," then perhaps it is that freedom of speech would help that goal of unifying the nation.
The south was the main agricultural hub in the area
Silk road. the roman and silver road don't make much sense and east and west does not specify asia so the answer is silk road