What is associated with: around 1870 the flag seen here was adopted by this country?

What is associated with: around 1862 this american locksmith introduced a dial operated combination lock for bank vault… What is associated with: around 1862 this doctor invented a machine gun that could fire about 350 rounds per minute? What is associated with: around 1870 christopher sholes 2 friends invented the 1st practical one of these including a q… What is associated with: around 1870 he bought some farmland in massachusetts developed his famous potato there? What is associated with: around 1875 this woman beats her future husband marksman frank butler in a shooting match? What is associated with: around 1884 edgar degas painted the portrait seen here of this fellow impressionist? What is associated with: around 1889 this scotsman purchased an estate in samoa which he called valima or five streams? What is associated with: around 1890 eli janneys automatic type of this replaced the dangerous link pin type?