This is easy, common denominators. Well you know denominators are at the bottom of a fraction, and you know common means the same, so it would be something like
a d
b = b
Answer:
i believe its D.
Explanation:
I recently learned about this. if wrong im sorry. but best of luck
Answer:
1945-1989 was period of United States foreign policy focused on the containment of the spread of communism in other nations also known as cold war.
The answer is b. continental break-up. During this time, the continents began to
form and also separate in different areas. It was also the time of mammals as
dinosaurs were now extinct, mammals began to flourish in the earth. The climate
was now cooling down during this period.
