A spike in birth rates in the United States during the post–World War II baby boom era caused an imbalance in available marriage partners for women 25 years later, thus lowering their marriage rates and delaying their marriages. This can be understood as an example of a .

Marriage Squeeze

Explanation:

Marriage Squeeze is commonly considered as a phrase, and is usually defined as a demographic imbalance where the total number of potential and eligible brides and grooms are not approximately equal to each other.

This marriage squeeze is mainly dependent on four major factors such as-

The above given condition can be understood as an example of marriage squeeze.

the correct answer is the following is a list of inventions made in the medieval islamic world, especially during the "islamic golden age" (8th to 13th centuries),[1][2] as well as the late medieval period, especially in the emirate of granada and the ottoman empire.

science and technology in the islamic world adopted and preserved knowledge and technologies from contemporary and earlier civilizations, including persia, india, china, and greece-roman antiquity, while making a number of improvements and innovations.

sumerians were polytheistic, meaning they believed in many different gods. so, the best answer is c.