Graphs showing the population pyramids of Canada from the year 2018. Shows a comparison of males versus females.

Presents charts showing the age distribution by gender of the population of Texas in 1990 and 2000.

A map from 1907 of the United States showing the distribution of the population in 1870. The map is keyed to show areas of population with densities ranging from under 2 inhabitants per square mile to 90 and over inhabitants per square...

A map of the central and eastern United States in 1860 showing the distribution of the population in the region at the time. The map shows State lines, the frontier line in 1860, and is keyed to show the areas of population density...

A map of the United States showing the population distribution in 1850. The map is coded to show population densities ranging from under 2 inhabitants per square mile to over 90 inhabitants per square mile. The map illustrates the...

A map from 1901 of the United States showing the population distribution at the time. The map is keyed to show areas of population densities ranging from sparse to very dense. This map is part of a classroom map study illustrating how,...

A population map of United States and territories in 1820 showing the distribution of the European-American population at the time and the general tribal lands of the Native Americans east of the Mississippi River. The map shows the...

A population map of United States and territories in 1820 showing the distribution of the European-American population at the time and the general tribal lands of the Native Americans east of the Mississippi River. The map shows the...

A population map of United States and territories in 1830 showing the distribution of the European-American population at the time and the general tribal lands of the Native Americans east of the Mississippi River. The map shows the...

A map of the United States showing the distribution of the population in 1880. The map is keyed to show areas of population with densities ranging from under 2 inhabitants per square mile to 90 and over inhabitants per square mile.

A map of the original thirteen States in 1790 showing State lines, territories northwest and south of the Ohio River, British and Spanish possessions, and the distribution of the European-American population east of the Mississippi River...

A map from 1912 of the United States, subtitled "Distribution of Population and Railways in 1900" showing the increase in population and expansion of the railroad network since 1850. The map is color-coded to show population densities...

A map of the original thirteen States in 1790 showing the distribution of the European-American population at the time and the general tribal lands of the Native Americans east of the Mississippi River. The map shows the State lines,...

A map from 1912 of the United States, subtitled "Distribution of Population and Railways in 1850." The map is color-coded to show population densities ranging from areas with fewer than 2 inhabitants per square mile to areas of 90 or...

A map of the central and eastern United States in 1840 showing the distribution of the population in the region at the time. The map shows State lines, the frontier line in 1840, and is keyed to show the areas of population density...

A map from 1910 of the United States showing the distribution of the population in 1900. The map is keyed to show areas of population with densities ranging from under 2 inhabitants per square mile to 90 and over inhabitants per square...

A map of the United States showing the distribution of the population in 1910. The map is keyed to show areas of population with densities ranging from under 2 inhabitants per square mile to 90 and over inhabitants per square mile. The...

A map of the eastern United States in 1790 showing the western extent of the territories to the Mississippi, and the distribution of European-American population at the time. The map is keyed to show areas of population densities ranging...

A map from 1907 of the United States showing concentrations and distribution of various European ethnic groups in 1900. The map is color-coded to show foreign populations where 8 percent or more of the inhabitants are Scandinavian,...

A map from 1920 of the United States showing concentrations and distribution of various European ethnic groups in 1900. The map is color-coded to show foreign populations where 8 percent or more of the inhabitants are Scandinavian,...

A map from 1898 of the contiguous 48 states showing the distribution pattern of the major cities and towns at the time. The size of the dots indicate comparative populations. "Most of the manufacturing of the world is carried on in...

A map from 1910 showing the general distribution of the principal cities and towns in the United States at the time.

A base map from 1897 of the contiguous 48 states showing the distribution pattern of the major cities and towns at the time. The size of the dots indicate comparative populations.