For how many years did the U. S. take over the management of the Panama canal?

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points.a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

(1) which of these statements best describes the views of nativists in the late 1800s? a)they believed that immigrants were inferior to individuals born in the united states. b)they believed that more people should immigrate to the united states and assimilate into american culture. c)they believed that no one should be allowed to immigrate to the united states. d)they believed that immigrants had a responsibility to bring their own cultures to the united states. (2)which of the following best describes tenements in new york city in the early 1900s? a) crowded and unsanitary apartment buildings where two-thirds of the city's population lived b) crowded and unsanitary apartment buildings where a small portion of the city's population lived c) dark and crowded homes outside the city where the majority of city workers lived d) dark and crowded homes outside the city where immigrants lived for a short time after arriving in america 3) during the 1800s, nativists promoted the idea that immigrants contributed to unemployment a) taking jobs back to their native countries. b) blocking american workers from applying for jobs. c) competing for jobs that they believed should go to people born in america. d) forcing or intimidating employers into hiring them. 4) which law required immigrants to be able to read and write? a) the chinese exclusion act b) the immigration act of 1917 c) the emergency quota act d) the johnson-reed immigration act

What type of legislation has the member of congress introduced? a: a joint resolution b: a concurrent resolution c: a private bill d: a public bill