For the first question
1 box
2 box
I think
There were many of them. Spain was divided from the English colonies with the desert in the south west region. There were also mountains in the west as well as in the east and north. lakes and forests also separated northern colonies from others. The Caribbean separated the middle part in case anyone wanted to go from one continent to the other by sea.
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Answer:
I believe it's two, gunpowder and crossbow
Explanation:
The soonest realized crossbows were designed in the main thousand years BC, not later than the seventh century BC in old China, not later than the fourth century BC in Greece (as the gastraphetes).
Gunpowder was developed in China at some point during the main thousand years AD. The most punctual conceivable reference to gunpowder showed up in 142 AD during the Eastern Han administration when the chemist Wei Boyang, otherwise called the "father of speculative chemistry", expounded on a substance with black powder like properties.
For his own sake, no. What he did blatantly put himself in danger and finally was placed under interrogation, etc & so forth.
For the sake of science, yes. What he did, and the consequences thereof, would have publicised his struggle, especially during the age of Enlightenment. Although what he did might also have momentarily pushed people away from science in fear of the consequences of facing the church due to the harsh punishment that he was subjected to. His persistence was, in the end only healthy for the development of science in later years.
The one with a big pickle