Answer:
The railroad boom began in 1862, when president Abraham Lincoln signed the Pacific Railway Act. This act offered two companies land along its right of way in order to speed progress. What railroad had a more difficult time with building their rail line due to the Rocky Mountains.
Explanation:
The beach moved because of landslide. This is a natural force.
Answer:
Islamic spread through military conquest trade pilgrimage and missionaries
Explanation:
and Muslim force conquered vast territories and built imperial structure over time
