Building codes, sewage systems, increased police officers, and more playgrounds were ways that *
1. slum life improved
2. cities welcomed new immigrants.
3. corporations donated their profits.
4. workers were rewarded.

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

the answer is: c. c.it limited the president’s power to start wars.

the war powers resolution of 1973 requires the president to notify the congress whenever the president wanted to order a military operation to other countries within 48 hours. if after being reviewed the congress disagree with the proposal, that the president will be banned from ordering the operation.

the article must be ratified by three-fourths (38) of states within a proscribed deadline.

source:

answer; john b watson,(observable behavior);