Which nation aggressively "annexed" austria and czechoslovakia in 1938?

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.

Which of these were achievements of the safavid dynasty? check all that apply.

What kind of contact did christopher columbus and native americans initially have?