What technology did Louis Joliet use?

The first significant Canadian-born explorer, Louis Jolliet achieved international fame in his lifetime as the first non-Aboriginal person, together with Jacques Marquette, to travel and map the Mississippi River.

Explanation:

Even though this question is vague, the only answer that makes sense is Louis Joliet's mapping abilities. Louis went on numerous explorations, but his main interest was waterways. He detailed coastlines, rivers, lakes, and wrecks.  His information was used by map makers to draw up maps of the region and released in Paris. He himself produced a map of the St. Lawrence River.

In 1694 he explored the coast of Labrador. It was one of the first successful trips made to and from Labrador. He kept journals, made sketches, and wrote descriptions of the people.  He later taught Hydrography at the College of Quebec.

Explanation:

a king decides to declare war on a neighboring country without the input of any advisers

your answer is 1930's

explanation

this is just around the time the great depression was starting and putting the us ecnomy into ecnomic failure causing the goverment to take a much larger rule to try and pieace it back together