When did martin luther king, jr. deliver his "i have a dream" speech?

Brianliestttme : ) how did imperialism contribute to the start of world war i? germany was the first to attempt to expand their empire. germany's attempts to defend newly independent nations sparked conflict in europe. violent independence protests in colonized nations spread to the european continent. germany's attempts to build a global empire put them in conflict with other imperialist nations.

The national women's suffrage association was formed in 1869 to obtain rights for women.

Which of the following inventions most directly allowed ancient farmers to produce a surplus ?