During<span> the late </span>1800s<span>, </span>many cities<span> were run by THESE organized groups, headed by a </span>city<span> boss, that </span>controlled<span> the activities of a political party. votes. </span>
A lake or pond depending on the situation.
I hope you are satisfied with my answer!! Good Luck !!!☻
Selection bias
is a kind of error that occurs when the researcher decides who is going to be studied.
