A variety of reasons. The ongoing debate about federal power had tipped to the side of the 'Federalists,' for one thing. But also, and perhaps more importantly, the practical experience of the nation during the War for Independence had demonstrated that, without a stronger federal government, it would risk failing in its 'grand experiment' of republican self-governance.
Freedom Riders= Civil rights activists, rode s bus to the southern segregated parts of the US (1961) to complain about the US court cases ( Morgan v. Virginia and Boynton v. Virginia) deciding that segregated public buses were unconstitutional, and the first Freedom Ride left Washington, D.C. on May 4, 1961,[5] and was scheduled to arrive in New Orleans on May 17.[6]
This was in the period of the great depression
Positive: higher population, more facilities, such as parks, roads and recreation centres
Negative: buisy, noisy, tight