How did chinampas help the Aztec economy.1 they protected them from foreign invaders.2 they helped them travel over land to trade.3 they were important weapons used in conquests.4 they allowed them to grow more food.

99 points explain the causes and effects of the japanese bombing of pearl harbor in 1941. make sure to explain 3 causes and 3 effect in detail.

True or false president andrew johnson granted pardons to thousands of southerners.

Which statement best explains how maynard jackson's 1968 decision foretold his future? he was elected mayor of atlanta in 1973 he was elected governor of georgia in 1990. he started his own bond and security business he removed segregation signs form water fountains at city hall