South America

The last Ice Age hasn't ended, as evidenced by the fact that glaciers are still on the planet. We are currently in an interglacial period within the current current Ice Age.

The term "ice age" is colloquially applied to a period of maximum glaciation, the last of which occurred 20,000 years ago.

Multiple causation is the mutual effect by many different forces to cause a particular human action.

Oceans and deep rivers form natural boundaries because they restrict human and animal migration.

During the last ice age.

900 million, or about 13 percent of the world's population.

Spanish

Covered regions tended to industrialize earlier OR

Industrialization occurred earlier in areas that had been covered.

Islands made out of sand

Carve away land

Basins and lakes

For Apex :)

Areas that had been covered tended to industrialize earlier.

20,000

The communication networks and the language spoken.

Quebec and Louisiana

The Line of Demarcation under the Treaty Of Tordesillas (1494) limited Portugal to colonies only in extreme eastern South America, which grew into the country of Brazil.

A region

Democratic

Copper Canyon

yes

The Amazon River runs through the South American rain forest.

The city of Iquitos also called the Louis of the Amazon developed in response to the boom of the industry of rubber. The rubber boom occurred largely between 1879 to 1912.

The practice damages biodiversty in one of the most biodiverse ecosystems on Earth.

Deforestation increases pollution and toxic runoff from farming.

Timber and farming creates big profits for some people, so deforestation is hard to stop.