People of similar racial-ethnic backgrounds and social classes tend to have more contact with one another in part because they are likely to live in the same neighborhood and attend the same schools. These shared experiences may also lead them to pair up in romantic relationships. This is an example of the principle of ___.

homophily

Explanation:

Based on the scenario being described within the question it can be said that this is an example of the principle known as homophily. This refers to the tendency for individuals to have ties/relationships with other individuals who have the same social aspects as them. Such as being of the same racial-ethnic background or even social class.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.