Those elements are:
sulphur
chlorine
argon
neon
carbon
oxygen
helium
silicon
calcium
hydrogen
nitrogen
sodium
fluorine
lithium
aluminum
9 of these elements were known during BCE periods. The knowledge of these basic elements is enough for humanity to start the industrial revolutions by leveraging and combining one elements with another as a catalyze to be included either as ingredient of the products or to speed up the production process.
I don’t believe they were but I’m not 100%
The correct answer is
1: Preamble
2: Articles 1-7
3: Bill of Rights
4: Other Amendments
The preamble comes first, and then the seven articles. Then comes the bill of rights which is the set of the first 10 amendments. After that, the constitution has the other amendments that were successfully ratified and became a part of the constitution. The preamble explains what the constitution is about, the articles are the basic ones that were presented at the continental congress, while the bill of rights was added to ensure the cooperation of states. Other amendments were added from time to time as the need for them developed such as the 19th amendment for example which gave women general suffrage rights.
The Vietnam war should be the right answer