I believe your answer is the year 2020
Explanation:
The periodic table is a chart or table of the elements arranged into columns and rows according to their physical and chemical properties.
Hope it will help :)
It was all of the above
The idea began with the expansionist program called the Manifest Destiny, a doctrine which said that it was God's plan for the United States to grow from coast to coast.
The Homestead Act was used to encourage families to settle in new areas by providing them 160 Acres of free land on the condition that they stay there for 5 years.
The discovery of Gold and the development of railroads further helped make it easy and more attractive to settle in western lands.
When modernization reached the west coast and populations increased, these areas became attractive areas of settlement for everyone
Answer:
B. Mexico and Canada (which, along with the United States, are in North America)
