Which of the following statements best illustrates the average size of white
families during the fi rst part of the 19th century?
(a) families generally grew larger.
(b) urban families generally grew smaller, while rural families grew
larger.
(c) urban families increased in size, while rural families grew smaller.
(d) both urban and rural families became smaller.
(e) trends in family size remained consistent with those of the colonial
period.

the mongolian invasion of china and central asia resulted in a disruption of the silk road as the chinese garrisons lost support from the chinese kingdoms which fell under the mongols. however, as the mongols established a formal dynasty in china, the successors of genghis khan restored the garrisons along the silk road allowing the safe travel caravans again.

president thomas jefferson commissioned the expedition shortly after the louisiana purchase in 1803 to explore and to map the newly acquired territory, to find a practical route across the western half of the continent, and to establish an american presence in this territory before britain and other european powers