1. how did christopher columbus achieve fame? (circle one.)
a. by sailing all the way around the world
b. by inventing many new tools for navigation
c. by sailing across the atlantic ocean from europe
d. by writing a play about queen isabella of spain

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

- tobacco.

- "rolfe reacted to consumer demand by importing seed from the west indies and cultivating the plant in the jamestown colony. those tobacco seeds became the seeds of a huge economic empire.the tobacco economy rapidly began to shape the society and development of the colony. growing tobacco takes its toil on the soil."

< 3

explanation:

i have ni idea

it increase by 12% a year from 1812-1820