Audio Index: 31:16

Topics: Famous Americans: Thomas Edison; Liberia; symposium versus workshop versus seminar; to account for; “Let us never negotiate out of fear, but let us never fear to negotiate.”

Words:

inventor

prodigious

practical

phonograph

patent

entrepreneur

telegraph

wizard

perspiration

to repatriate

to colonize

elite

symposium

workshop

seminar

to account for

to negotiate