Why was cement such a useful material (Rome)

Because Rome is built on hills and stuff and they don’t want them houses to tip over so the make the buildings sturdy and dirty with that cement boy

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement