<span>Experiments in which all variables are identical except for one are called controlled experiments. This where an observer tests his hypothesis by looking on changes that were brought about by one variable. The results are always dependent on one adjusted variable.</span>
Answer:The march was successful in pressuring the administration of John F. Kennedy to initiate a strong federal civil rights bill in Congress. During this event, Martin Luther King delivered his memorable “I Have a Dream” speech. The 1963 March on Washington had several precedents.
Explanation:Cant explain now cause im in school right now but make sure to like and rate pleaseee.