I need the answer asap

Why did the paris peace conference negotiations last over a year?

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.

Plz . explain what shopping was like in london during the early 1900s. how does this differ from the modern shopping experience?